The moves of Jak 1 would bring the most diversity. Where as his supers could orient around his Dark and Light evo powers, or gun abilities. In turn his actual costume sets could be well, who knows? They will incorporate his 3 versions regardless. I can't picture them not doing that.
"Exit the stage. Your act is over." - Vergil
"Come on, come on, come on, come on, come on! Now die!" - Albedo
The Jak 3 one.
With Light Jak and Dark Jak as finisher moves.
Red eco, green eco panels, blue eco can all be items. No reason to create a character out of it.
Jak would have a better moveset with his guns and dark & light jak anyway.
Well I hope we have all 3 costumes, but I'd prefer his Jak 3 moveset. There's without a doubt the most variety there. You have his spin attacks & punches, his guns, and most importantly, Dark and Light Jak. Even his hoverboard could be used as some type of Super (like Parappa's Level 2).
I feel like the only variety we'd get from Jak 1's model are the Eco powers. But I see those more as Items usable by everyone, and not really attacks specific to Jak.