Garteam
Smash Master
I'll be honest, I think Lyn and an additional Three Houses character have missed the boat to get into Smash.
Barring Chrom being added as an echo, Smash seems to exclusively look to the future when it comes to adding Fire Emblem characters. That (kind of) makes sense, Sakurai wants representation relatively up to the date. Elibe and Fodlan also presently have Roy and Byleth as popular representatives with well-liked, existing movesets. I can't see efficiency-oriented Sakurai throwing out that work to replace them with an alternative character just because there's another character from those games solely because they did better on CYL. There would need to be a K. Rool-tier push to give Lyn, Edelgard, or Dimitri a real chance at getting into Smash on the grounds of being a fan favourite.
Barring Chrom being added as an echo, Smash seems to exclusively look to the future when it comes to adding Fire Emblem characters. That (kind of) makes sense, Sakurai wants representation relatively up to the date. Elibe and Fodlan also presently have Roy and Byleth as popular representatives with well-liked, existing movesets. I can't see efficiency-oriented Sakurai throwing out that work to replace them with an alternative character just because there's another character from those games solely because they did better on CYL. There would need to be a K. Rool-tier push to give Lyn, Edelgard, or Dimitri a real chance at getting into Smash on the grounds of being a fan favourite.