Tags-
It will be easier to find the thing wanted,the threads can also be sorted.

Prefixes-
It will be easier also, if there is a RP thread, the prefix could be RP.
If it's like a series that needs people, it could be People Needed.

Projects-
I think there should be different areas in projects.Like House,Contest entry,Arena,Redstone Powered,SMP,Adventure,Survival,Parkour,Pass it on,CTM,ect.