Add a hint to an incapacitated state : "press Esc > Respawn if you don't want to wait for a revive"
Why? I think a lot of new guys don't know that they can do that and it can lead to ragequits when a newbie gets killed often and has to wait 3 minutes each time. I've heard ppl asking "do I have to wait 3 minutes?" many many times. God knows how many ppl didn't bother to ask and just quit outright.
It's not a perfect solution of course, but at least it shouldn't be time consuming.