"TMW 5" you said?? :DDD So excited omg! (and scared, a little.) WEEEHHH~! I want to read about the marriage! I'm not enouraging you to write teamwork for Nano though. It's much better for quality when you are truly inspired instead of forced to write. >__>
(About naming the saga fics, I woudnt't mind 3.5 but you can also rename TMW III to IV, to create space.)
Werewolves and mermaids are nice too....and OC....Argh, I really don't know how to advise here. *useless*

I'll try to give my team7 AU story a sequel. They haven't even /kissed/ Sakura yet in 50K of space, stupid boys. U___U;