Well, I used to play slow shooters (where u spend more time to get to the position, then to PVP). And there is a large difference on how the soft works.
ESP- shows boxes that are close or in the fight with teammates. I think it is how the server/client part works in the game. Nothing special- bright boxes/bones- means the enemy is on sight and you can shoot 'em nice and clear.
AIM- well, as usual I do not play with aim. But, I tried it here- so, some experience. Aiming for bones works well. Not bad for instant weapons like sniper rifles or other handguns. No sense for rocket launchers.
The nicest stuff is boxes of cloaked spies. Shoot 'em all in the shadows)
In total- kinda standard loader/injection procedure I've seen many times before. Works also as expected. No great advantage as for huge TTK and tons of action should be, but gives a lot of fun using. Aiming at neck bone will help you to stay legit.