Problem: Since players usually move in clusters and the clusters can get really spread out over the map (depending on level of cooperation), it's extremely hard to take out an armored car without an AT guy in your squad, without AT capacity it's impossible to escape the Island and the game session is doomed to fail.

Solution:
Allow players to pickup whatever gear they find in ammo crates and weapons caches to allow all players to carry any type of gear and adapt to the situation.

Also allow players to use all empty equipment slots, it's kind of annoying that you can't pick up those cool red smoke grenades when you see that you have many slots free in your backpack.