How about supply crates that act like tents except they only fill health up to 75% and ammo up to 30 reserve ammo? Make one by holding right click to choose a list of "craftables" (sorry it's sounding Minecrafty) when you choose crate, it uses up 25 blocks to place. Perfect for us Blues who like to advance and flank to form leetle bases.

I think there's enough ammo in the game and you get blocks from digging into the ground, so it's pointless really.

I like it because it isnt very tactical when you're attacking green base from your little bunker and having to go back to the tent on the other side of the map just to get extra bullets.

Yes I often run out of ammo.

There could be medikits, which players would get from tent, but nothing more.