I want to ask the same question lol. Especially for a dev server.
Dev servers are really boring to be a GP on.
You just run around an incomplete gmap, being a hassle to other developers.
Barely any players to monitor.
You barely have any rights, just boots, warpto, RC and that's it.
Trust me, having a job is actually funner than being a GP on a dev server.

Besides from having pretty customs, hats, and powers, you'll pretty much be extremely bored.
Learn some basic GS2 and script a few NPCs. It's not that hard and is pretty fun.
Or you can make a few cool levels. It's just taking tiles and placing it to your imagination.