In a recent interview with PC Gamer Tripwire started to hint waht's after Chiv 2Well... What could KF3 truly bring?
That's a real question. What meaningful changes, gameplay-wise most of all, would warrant having a third game? If we're merely getting some texture polish and maybe a few extra guns... It's not worth it. Hell, even adding a new perk or a new zed could be done in KF2 if needed.
Something most devs don't seem to get nowadays is that you cannot just release the same game with a new coat of paint and call it new. Most do it to bring back the fanbase, once the hype dies out. But if there's nothing new, people will stay there for like 3-4 months. Rinse and repeat.
Maybe KF3 could have a new game mode? Maybe it could be more story-focused this time? Maybe it could turn "hero-based shooter", since the characters already got more personnality in KF2. Maybe it could remove the perk system altogether that way. Or keep it, but allow for "mixups" , as in you could become a demolitionist/commando hybrid and all your ARs would have grenade launchers (and you'd have more explosive resistance), or a sharpshooter/berserker hybrid and you'd replace your grenades with hatchets that deals extra HS damage. Or MAYBE it would be the right time to finally polish and implement a real upgrade system?
I'm pulling ideas out of my ass. But the point I want to make is that KF3 should bring something that KF2 cannot. If it's only to get two new perks, one new zed and one new toy for each existing classes... I'd rather avoid another game.