Playing this on Vita now and would be ultra stoked for Yu to make it in. Would be awesome having a character that can switch fighting styles on a whim. Don't know why everyone wants a FF character Atlus' RPGs have be doing far better and they take new chances with new gameplay styles.
Also heres what i think of how Yu story could go on PSABR
Yu heard a rumor of the Midnight Channel going live again. This time a large group of people have gather inside the TV wich are the rest of the cast of PSABR, so as always he decides to get in the tv againthis time by himself to investigate.... (ALTHOUGH i dunno wich rival he can get) he fights Polygon wich Yu believes he is the Shadow/culprit behind everybodys mix up inside the TV. He destroys the "shadow" return home (and "save" everyone from the tv) and adquired a new power to fusion new powerfull PERSONAS
Heres some potantial rivals.
Gex (Yu sees him jump out of a TV and thinks he's connected to Teddie)
Ari & Stan (Stan is a shadow)
About the Level 3. Yeah. lol But it can't be helped since thats his most powerful attack in all the P4 games and it would only work in a cinematic form.