This conflicts me because I loved Mewtwo but Lucario's my best character in Brawl
I would hope for Roy to come back, normally, but with recent experience in FE8 (and the fact that it was actually localized), I think Ephraim might be a cool character to actually play as, without the clone syndrome people accuse Roy/Marth of.
...But at the same time, FE8 is pretty old so they had their chance already, and probably won't do it.