Yep, played 4. I didn't think it deserved the hate it got on release, but I do remember thinking it was kinda meh. I played it pretty early on though. Apparently it's had a lot of work done since then so I should probably give it another go. I think I just like the location of 3 better. Greek island vibes are nicer than a dark jungle/desert/tundra imo.

I've also played the DLC, but honestly could take them or leave them. I like the skill involved in staying on the wingsuit, and the jetpack kinda ruins that. As for the mechs, meh. They're fun, but not really why I'm there.