(I searched for a similar topic, and didn't find one. If it's already been suggested, my apologies)
Right now, one thing that I believe ruins the game is the fact that a single soldier can capture a flag by himself.
That a lone wolf can change the course of battle by capping a flag from where half his team can spawn to capture nearby undefended flags lightning fast.
Sure, leaving a flag undefended is a mistake, but on large maps, a 32 player team can't defend all it's flags while attacking.
Some maps prevent that with a pre-established order forcing teams to cap flags one by one, but that is not always the case, and even if done in the right order, a single soldier capturing a flag alone still feels rather unrealistic.
So, my suggestion to prevent all this is to have a new requirement to cap flags: the need for at least two (or more) players to be in the flag zone to cap it.
It would also, I believe, encourage teamplay.
What do you guys think?