If I were to pick any character from FE to get into Smash, it certainly wouldn't be Anna.
And it probably wouldn't be Tiki either.
I thought Micaiah would be a cool/interesting addition to the roster for a time, but no matter how much I love her, I don't think she's really relevant at this point. I don't consider it a possibility any longer.
But the underlying reasoning behind all of these is the fact that I think
Not only do I think Kamui is more likely than any of the above to get into Smash, but I also think he/she would be much more fun to play as than any of them.
That having been said, I'm actually quite content with the representation FE has in Smash. If I thought Lyn could be very different from any other pure sword wielder, than I would want her as well. But even with the different fighting style from the other sword wielders the Mani Katti (or Sol Katti) could provide, being in essence a katana, I don't think that really makes her exempt from the fact that she's just a sword wielder. Plus, GBA FE, as well as the Elibe saga, has already had representation with the inclusion of Roy in Melee.
Even though I loved Roy, both in FE and in Melee, (the latter of which I played long before playing any FE game,) I'm not very happy to see him returning. I think we have enough FE in Smash for the time being. And not to mention, he's a Goddamn Marth clone.
Excluding Roy, (and one other little nitpick

,) I think FE has all the representation it needs in Smash. I would be satisfied if the characters we have now would be the only ones we ever have in any Smash game until the end of time.