I agree with Hamas that the money output is low and maybe increasing kill rewards by 50% would solve the problem. I alos agree that when an admin is on the game is much better. Recently I have not been on very much due to college starting up.
I disagree with the idea of changing the match times, or halftime money reset. If we change it to 24 minutes it will make no difference at all in my mind to the average player who is going to spend all their money anyway. The halftime lets both teams play both sides on an unbalanced map and giving one team 4000 bucks to start their half on the bad side is unfair.
The only option I see is to increase kill rewards or team rewards for winning or losing. Anything else seems pointless to me.