This is going to be a long rambling about some aspects of the game balance that i think could change, but once again this is just my going on stuff that i could be horribly wrong, it's not something i expect to be implemented, its stuff that i think could be presented as an alternative to discussion and pass the time honestly and i feel that a lot of people will probably really dislike my view on things so it might be better to see as random guy on the internet yelling at clouds than de facto opinion how everything is wrong and i hate you.
Rifles, ARs, Shotguns and Pistols: i always felt that these weapons had a bit of wrong extra stat for their archtype, Rifles should have % Armor damage bonus. ARs should have CD since they are similar to SMGs in magazine size, rof, reload speed and others, they have more natural range and accuracy so it made sense they would get the "lesser" stat that is crit damage while not weak is less direct and easy to use as crit chance fo SMGs. Shotguns on the other hand should be a counterpoint to snipers, focus on indiscriminated heavy hitters for damage with no worry about accuracy and should have gotten % Body shot damage instead, that should count anything that isn't a weakpoint or "headshot" as part of the body, similar to what health damage does with heavy armors and mechanical enemies, it would allow them to keep their niche of close range and not guns that you aim for headshot while still being better. Pistols should just get the % Health damage bonus, a bit like in D1 where they did more damage to damaged enemies the same would apply here to "enemies without armor" since pistols suck against body armor.
Optimal range & Accuracy: Honestly the optimal range stat should be removed, not in the sense that guns no longer have drop off, but it's not something it can roll in gear anymore, might be kept in few taletns such as "safety distance" SMG, but instead be merged with accuracy, if you have 20% more accuracy you have 20% more range. Nobody will sacrifice other options for JUST range, and this would be a small bump into making accuracy more interesting as well the Weapon handling stat.
Skills and charges: I do think more skills should work with charge system, such as cluster seeker mines that player would be able to control how many to they want to throw and each individual one would be a charge, this way players would low skill tiers would be of course unable to hit that many enemies and would suffer from individual cooldowns with low damage, but higher skill players would be able to have more controls if they want ot a single enemy with many charges or one go individually, devs could put a cap on how many you can throw at once against a single enemy in quick sucession if they think it would be cheesy or play with cooldown and chages amount better.
I also think that the firefly variants that tagets ONLY weakpoints and the one with proximty bombs should just be merged into a single skill that does both (you release at an enemy and it attacks their weakpoint if they have any and plants a bomb even if they don't have a weakpoint) and a new one focused on either hacking or disabling and shocking eletronics should be made in the vacant slot, could be a single target that either attaches to skills and makes them turn against your enemies or just attach and start zapping them and doing more and more shock damage to eletronics over a medium period of time, heck maybe even heal you based on the amount of damage it caused to an enemy skill as an alternative healing skill.
Granades and status effect: I honestly think that granades need to DRASTICLY get a damage buff to scale better or even make them be based on enemy health, frags always cause 50% of the enemy health and cause bleed, the concussion that is purely explosive deals 100% of an red enemy, 80% of an veteran and 65% of an elite or something. Heck that could make things more interesting for them cluster if each small explostion deals something like 12% of an enemy health so it becomes about either spreading out or trying to hit a closed space so all explosions stacks doing massive damage. Since granades are a constant tool with limited amount that are also limited by spec the ones that deal damage should matter as much as the ones that deal status effect that honestly see more use since blinding an enemy is seem more importantly than dealing bad damage and a bleed.
...Which brings me to bleed and few other status effects, well i just think that bleed should scale with the enemy HP and thats it. Blind and confused on the other hadn i think could use small tweaks so they don't feel exactly identical in the sense that it's just CC an enemy, i think blinded should have an enemy accuracy debuff that still lingers a few seconds after blinding an enemy so even after they come back from walking with their hands covering their faces, they would still have an accuracy debuff after resuming to regular behaviour for the next 8s or something. Similarly i think confused enemies instead should attack the nearest thing while confused so they would stagger a bit and be hipfring at that target, is that an explosive barrel, their own turret, another enemy or even if another player if in the wrong way? all for me sound valid, it could be interesting to make an enemy shoot another and then these two keep shooting, of course it wouldn't mean he becomes your ally for the rest of the gunfight, just that if someone is confused and hits someone else, that person will retaliate and when original enemy goes back to normal eh would be retaliating the retaliation.
Exotics: Honestly think exotics should be more exotic, we should have a crossbow that is considered an exotic sniper and for whatever reason uses sniper ammo when you shoot, there should be big game revolvers that are primary and use rifle ammo, nailguns that count as SMG and use SMG ammo, old WW1 LMGs such as Lewis gun, ARs with magazine taped together that each one has a different ammo bonus kinda like the old "House" SMG had a switch mechanic, make the Sweet dreams swtich between semi auto and pump action like the real Spas-12, you know fun and somewhat crazier stuff for the players but not magical lazer guns, just the right type of weird like the enemy has it and we dont.
Extended magainzes: Honestly think they should be nerfed into obilivion or removed from the game with very few exceptions, game feels balanced around people using 60 round magazines with lots of crit chance and crit damage hitting around 50% headshots with the rest being either body or misses. That naturally makes every gun feel the same, the tommy gun drum magazine isn't special if you can just slap almost every other gun with that same size and have more modding options, similarly LMGs always felt a bit weird in the sense they are balanced to take more shots to kill but their overall bigger magazine size would cover more than that...if the other guns had natural magazine sizes around 20-30 rounds but that is never the case.
Specializations: They kinda suck you feel that you grap some minor bonuses and thats it, they are not that grandiose to character customization yet the game treats it as a MMO job that is meant to very different from each other but you can slap the same min maxed AR/Rifle crit build using providence, grupo sombra, cz, fenrir and so on and achieve almost perfect identical results in all of them. They should offer more rewarding and interestings opportunities for the player, i honestly forget what most of the armor kits of each one does and that surivavlist even has a special healing seeker. I know that many people share similar feelings about signature weapons since they ask to be able to hide them in gameplay for being ugly or that they just exist at all since they rarely happen to use. I already made too many threads on this subject that the devs can feel free to go after because there are A LOT and some of them are REALLY LONG so i'm not in the mood to rewrite everything inthere.
Well that was mostly it, a bunch of comments on random stuff, if you read all this congrats because i certainly wouldn't and it's already 2 AM so i know it's riddled with typos, wrong punctuation or might have some pure nonsense. Anyhow don't wanna talk about PVP or the DZ so gonna end it here (does the suggestion tag makes sense if it's intendeed for the devs like the feedback tag?)