I have had problems with the current sinking system where areas that aren't grassy still lift up to sink units and make them totally disappear when they go prone!

I would add a detonator to the list of grenade types if you have explosives in your inventory or on the ground. Then you just switch your grenade to it and hit the grenade key to detonate. Better yet it would be cool to actually add the detonator as a separate item that gets added to the grenade list when you have it.

I read somewhere that as of right now the AI hasn't been given detection exceptions in water. So to them water is non-existent and being underwater makes no difference compared to being above land.

This happens in the vehicles too. I don't care how bulletproof your glass is the most bulletproof glass I heard of can only withstand about 20 shots.

OP didn't read section 435, paragraph 50, line 4, bullet-point 6 of the change log:

+Snakes intelligence increased to human + 1 (induces telepathy)

It would be a bitch in some situations (the next round is a different time) and they would have to add additional config to all weapons but I guess it would be a cool, if almost unknown and unused feature.