I need a TMNT RPG badly...
I know RPGs are usually epic adventures with huge worlds, but, hey, Persona 1 and Persona 2 on PSone happened in a single cty and those games were still amazing!
I'd wish for Konami and Namco to make a partnership to create a TMNT RPG. While Konami would have the rights to publish TMNT games, Namco can use the 'Tales Studio' s popular Linear Active Time battle system to make the RPG more dynamic.
Oh, and I'd have Akira Yamaoka (from Silent Hill) to compose vocal songs and Yasunori Mitsuda (Chrono Cross) to compose the background music.
Branching storylines are a must. And also, perhaps the possibility to choose which turtle to play with. And with multiple save files, having the ability to link them to each other...
I can talk about my ideal TMNT RPG forever, but I think I've said enough. ^O^