Personaly, I don't want it to be anything like Uncharted or any action game in general. It has to be taken seriously and has to be subtle and survival. Like DayZ for example. I want to see the exact same melee animations from the single-player and low ammo, no health regenration and scavenge for supplies. And has to be cinematic. Or in other word, must contain cutscenes.
What do you think, guys?