Ehh, not super interested in the story or setting, personally. It just doesn't do anything for me, honestly. As far as the gameplay goes, we obviously haven't seen much of anything yet, but I really, really don't want to play Far Cry 3 again. I feel like everything we've seen from this franchise over the last five years has just been some variation of that game, and I've just kinda had enough of it, frankly. I just don't want to take over a bunch of Outposts, climb a bunch of towers, and hunt down tons of meaningless collectibles all over again.
Unless they really do something innovative or unique here, I'm just not interested. I mean, campaign co-op is new, but I'm not really sure how they'll balance around that. Either solo play will suffer for it's inclusion, or it will be stupid easy, most likely. Aerial dogfights sound cool though, I suppose, if they control well. Maybe Far Cry 5 will be the next Far Cry 3, and just take this franchise to the next level, but right now, I'm admittedly pretty doubtful of that. Hopefully I'm wrong.