I'd like a young Gambit,I suppose.
Gambit as an adult is cool and all,but there's a certain appeal about a young one.He'd just fit in more,and it would make the movie flow better,I think is what I'm trying to say.
Even if there wasn't any G+R romance,I'd still like it that way.
On the other hand,somehow an older Gambit would come off as more manly and attractive,maybe.Like the Gambit of the comics is;Masculinity incarnate and 'so sexy it hurts'.He'd certainly be an interesting addition to the cast or to the main team.
Either way,if he does get in,I hope they do him justice to his comic roots.