Still missing Lyn.
Still missing Hector.
Still missing Eevee.
Still missing Gen 3 and 5 (but I'm not so desperate for that I'd take Gardetelle)
I'd hate to be that guy, but every franchise will always be "missing" someone.
When Mario gets Waluigi, it will still be missing Toad. After Toad, Mario fans will find some other popular character like Pauline to rally behind. I'm not saying people shouldn't "support" these characters, but if your goal is to "complete" the roster then it will never happen, especially not with franchises with as many characters as Pokemon as FE. Just look at Kirby. People said it was "complete" after Dedede and Metaknight, but there's still people who are saying it won't be complete until Waddle Dee gets in.
Let's say we get Lyn and Hector next game. There will still be Alm, Celica, Sigurd, Leif, Seliph, Ephraim, Eirika, Tiki, The Black Knight, Eliwood, Micaiah, and heck even the likes of Garnef. Not to mention you already have people rallying behind Edelgarde when her game isn't even out yet. Fire Emblem's roster will
never be "complete".
I still think it's cool to hope for these things and there's definitely some FE characters and Pokemon I'd like to see in Smash but I think it's also important to accept that perfect representation isn't even possible.