I didnt like it for a number of reasons. Guns and ammo were two of them.
If theres a mod available that lets you pickup each type of weapon and lets you have 3 times as much ammo, I would love to know about it.
Fry Cry has a cheat that gave you each weapon and 999 ammo for each. You could only see 4 weapons at a time in your inventory but you could scroll through and access all of them.
Doom 3 (which I still dislike) has a mod that lets you carry a LOT more ammo. Something like 500 shotgun shells and about 2000 rounds for everything else.
It also increased the ammo capacity of some weapons. The pistol holds 24 instead of 12, shotgun was 16 instead of 8, machine gun and chaingun and plasma rifle were all bumped up about 50-75%.
The only downside is the mod also made each bullet a lot more powerful, so they really screwed up the game balance.
I'd like to see something similar for Crysis. A mod that allows more weapons at once, more ammo per weapon, and also maybe something that lets me sprint a little longer. I think cheat codes will take care of the last one.