^For the gun combat, and it is just my opinion, the could take some inspiration of Mass Effect.
The over the shoulder and zooming could work, as well as some of the skills like better aiming both for % of hit the target but also % of hitting critical parts like the heart or the head (something that goes in line with classes) or faster cooldown/faster reloading for your weapons and/or implants powers.
@Gomamon. I don't hate it, it's just that I don't get used to see your nick with that pic. Nothing that time can't solve.
Please excuse my bad English.
Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070
Steam / Live / NNID : jonxiquet Add me if you want, but I'm a single player gamer.