Now, I've been thinking lately...
Sm4sh doesn't come out for another 3 o 4 years, or maybe more. Looking at the PKMN franchise, it's highly doubtful, but they might have a 6th gen b4 SSB comes out. That's one thing, but in the character side of things, I believe Keldeo may have an awesome chance too, along with Genesect for future releases. Ultimatly, the Pokedex was followed with PKMN legendaries' movies. Example: Darkrai, Dialga, Palkia, and Shaymin and Giratina, and Arceus. Now, we have at present moment...
Victini, Yin Yang. But what about the others..?
There is still Keldeo, who'll have a movie with the three musketeers Terrakion, Cobalion, and Verizion. That's obivous. Then we have Meloetta and Genesect, who could possibly be in the same movie. Note also Kyurem, who might tie with the original two. Note also Tornados, Thundrus, and Landorus. So many Pokemon legendaries, so how could they fit all of them in 3 movies? Or will all of them not be?
The bold means that it's not truely known, but is guessable.
I worry of Victini's appearence, but with hope, the only movie besides Victini's that'll probably come out is Keldeo. Genesect, after looking into this, is looking grim.