I could write a plugin that kicks a randomly chosen person off of the team with more people, and then tells him to join the other team. (would be really good on stuff like pillbox)
I could also write a plugin that provides a graphical interface (I think) to the server, or maybe a graphical server starter that lets you select what you want and then has a big START SERVER button.
Or, a plugin that creates / commands for doing polls - like the existing /poll command, except with more features, like the ability for users to run arbitrary commands. ('A poll has been started to set _tankSpeed to 1000...'

If anyone thinks that they would use any of these, I could probably write them.