I actually think their won't be a GotG 3. I think many of the actors will walk away from it. They seem to support Gunn and I'm guessing they are pissed right now and frankly they don't need to do it. They are rich and have very active careers.
Jason
Walk away? If they signed for three films and pulled some unprofessional, immature crap like that, expect Disney lawyers to drop out the sky hurling contracts at them like a circus knife-thrower.