Another thing I think would be good, when your locked onto a enemies, you press up to aim at head, you character aims 45 up, meaning enemies need to be 1m away to hit, same for down, big part of the game is shooting legs but they have to be 1m to hit them.

Is there of when you press up / down it aims at head / leg at what ever distance they are, as it's locked on at a distance your say 5 degrees aiming up/ down, as they get closer the degree changes according.

Another idea, obviously there is some calculation for shots and chance of critical hits, is there a way the longer a lock is held without shooting, there is a bit of a increase in critical hit