i was trying to sleep and it came to me. i don't know if this is a good idea or not but here is what i think should be next for the series.
we go back to the rook islands from far cry 3. the rakyat have taken the place of the pirates and the mercs. they have begun forcing weak locals to battle to the death to weed out the weak and actively stomping out resistance. and since citra died at the end (depending on your choice.) i could see a random warrior taking over the tribe by rising through the ranks. now we have had three types of villains. insane, intelligent, and creepy and calculated. however, i don't think we have had a brute of man. one who is super charismatic and not too intelligent but so unbeatable in a fight that everyone fears him. i picture a massive rakyat warrior stepping up and taking control of the tribe and the island and since Ubisoft have begun seeking out more famous people to play the villains i could see only one man being prefect for the role. Dwayne Johnson. the rock himself. and for the protagonist we could play as a former pirate from Vaas army or a local. and for the side you are fighting alongside it could be a different merc group sent to the islands to try and keep things in order after Jason Brody got back to America and informed the government. or start a resistance group formed by the locals. and it would be great the see Jason or Vaas appear again.
anyways that's my thoughts on what would be nice to see.