Finishing. Just tearing off your head quickly bothers, picking it there by the head and cutting it off in the neck. “Perfect cut” and all that, the new cutscenes that soldiers see in the dark when they spend a long time finishing them. Uniqueness!
Emotions for a wheel of imitation / replica of soldiers. With the second, I will not fantasize, but different sounds for a predator would be a great idea.
I would also be ready for a distribution model like DBD, with DLC predators and Soldiers, provided that their perks can be obtained without pouring money into the game. Any other ideas?
Lootboxes suck.

