Okay so
•Tayah/Dave should just be training or something with Zeke and then this Youma (i think its a Youma, i forgot whether or not you changed it here) decides it would be a terrific idea to appear. It starts, ya know, effing things up, so Tayah/Dave runs away and transforms to Sailor Dream/Star/whatever it was because I told you my memory is terrible. ANYWAYS... So what if Cloud was walking around and happened to see her transform. BOOM-chaos.
•Just..ya know.. More fight scenes. That stuff is cool.
•maybe Tayah being more of an awesome bada$$ ninja in her sailor form
•the rest of her friends defeating whatever is outside and making it to wjere Clare and Tayah are
•wow my ideas suck
•and now I'm doing this to make it look like I actually have a lot of ideas
Well, thats it. Hope it (somewhat) helps.