I think it'd be a good idea to implement a feature that was enabled on Tremulous: sharing and donation.
/share <player> <number>: This would give a specified ammount of credits to someone on your team.
/donate <number>: This would divide the number of credits chosen between the number of players on your team and equally share that ammount of credits between them.
This was a semi standard Tremulous mechanism. Most Tremulous players request a feature like this, I did that too. We could even make the funds "overflow" to the team automatically.
I have however, heard arguments against allowing this. One is this: a single strong player on a team will be a big advantage for the whole team. If this player could provide a steady stream of funds to their team, the advantage would be even bigger. This might not be desirable.