The fact that abilities don't cost ammo is due to the fact that russians have developped a new gameplay.
99% of people who say that balance doesnt need a general change are the guys who play as russians. People who play as axis cant do anything with that issue because the players of russian side afraid of their OP army
Get paks, pios, mortars and nebels. hehe And wait for snipers wcho send you foo arty