I have an idea for a large theme that I'm really interested in. I think it could be awesome.
I also want to run some newbie games to give back to the site, but I have to wait through the Open or Mini Normal queues. At the moment, the Open queue is 3 or so months long, and after that wait I'll have to mod a game that I really don't want to run which will take probably another 2 months.
So the actual wait to become a first time mod is something like 8 months.
In the time it takes me to get to the top of the Open queue, I could probably have run multiple micro games.