I'm surprised this hasn't come up before, so I hope I did the search right...
It would be great if we could use a common In-Game Currency (IGC) to buy things like item packs and cosmetics. I used to buy a lot of in-game stuff (I bought almost all the guns in Wildlands on Day 1), but now that I'm only interested in a gun here or a gear-piece there I'm reluctant to commit to buying currency, knowing that I may wind up with leftovers wasted when I move on to my next game. The result is that I don't wind up buying any currency at all, and the cycle repeats when I move on to my next game. If I just had a Connect IGC wallet I would be inclined to buy a large pack of IGC each time (to take advantage of the lower per-unit rate), buy whatever I want in whatever game I was playing and know I could carry whatever was left with me to my next Ubisoft experience, buy another large IGC pack when I ran out and repeat the process.
For example, I think I want the Chromatic bundle in Far Cry 6, and there are other bundles I might consider later. I would have to buy the pack of 2300 Far Cry credits to get the bundle I want now, and buy the 1050 pack if I want to get any of the others, but if I step up and buy the 4200 pack and move on to another game before buying another bundle I will waste a lot of IGC, so that makes me indecisive and I either buy the smaller (2300) pack, or maybe none at all. If I knew I could take my remaining IGC to whatever Ubisoft game I play next I'd happily commit to buying a pack large enough to get me whatever I might want in Far Cry 6 (in this case the 4200) and carry the remainder forward.
In-game purchases are about as discretionary as spending gets and difficult for some to justify, so simplifying choices and easing commitment anxiety by minimizing perceived risk seems like a smart move. It would encourage people to buy through Connect instead of Steam or Epic, and may yield further opportunities, such as a Ubisoft Plus subscription plan that includes an IGC allowance each month.
Just a thought. I'd love to hear from people who think their buying behavior might change if this happened.