The mechanic I'm talking about obviously wasn't always available. Every time you threw something, you had to wait a while before throwing it again. This time was shortened if the members of the various fireteams followed the orders. So, in addition to awarding extra points, they allowed for quicker use of various gadgets. However, I don't understand what you mean when you say that having only one player in the commander role isn't fun... Obviously, one commander per faction. Do you want to have multiple commanders per faction by any chance?
In any case, I recommend you go and catch up on some gameplay of BF 2142; a very old game but light-years ahead of modern games in terms of mechanics.