I'll set you up as a maintainer for both tonight. From there, you can add anyone that might want to help you.
I will also be removing myself from the asylum moderation.
For the prompts. I tend to look to other communities or "prompt ideas for writers" sites. I also took requests from the asylum members.
What I had prepared as the next prompts for Saiyuki were: "formal wear required", "naked", "pets", and "telephone". For Gundam, I had ""illness", "taste", "conventions", and "first person narration".
I was also doing a week for each character. The tags are all set up and pretty straight-forward.
What I would do, is every Monday, I would write up the prompt and add the tags to it. Then I would immediately put the prompt post in the memories under "mod prompt". I am sure you'll see it. Most people would tag their own drabbles, so that took care of a lot of my maintenance.
I am sure that you will do fine, but if you have any questions or anything, you can contact me through my journal anytime. ^_^