Well, Inafune does have a type of fondness for the DASH series, so maybe he's giving Megaman Trigger this exosure because he can't quite get that 15 million he wants for DASH 3. And maybe he wants to hype more interest for the DASH series as well.
Tron is almost a certainty. Can anyone name a game with Megaman Trigger that
didn't have Tron? It kind of makes me wonder if Roll will be a fully playable character on her own or just kinda support Trigger from the sidelines.
EDIT!!!!!! Here's visual confirmation on MM Trigger! Courtesy of IAintJWong.
http://www.youtube.com/watch?v=adMiaDbYUdA
I have to say, this certainly makes my day! It looks like they used his old MM Legends 1 design. Not bad.