I really hope it's available to be modded.
I've seen some gameplay and it looks a bit easy/non-immersive to me.
i.e.
Unlocking Weapons for Free at Radio Towers(stop this, increase weapon prices)
Go from being 20-something-year old average guy to being 1337 pro mercenary guy(add more recoil, less accuracy, weapon degradation)
>INVENTOY MANAGEMENT<
edit:
also, hunger/thirst mod would be cool.