Ahhhh. I think Arle would make some sense as a finale of the fighter pass. She'd be representing one of the largest genres of games that currently doesn't have a non-clone fighter representative. She'd be a female representative in the pass. She'd be on the larger end of the fighter pass characters franchise-sales-wises, beating everyone but Hero in terms of sales. Plus, I imagine her moveset would just be fun!
The big issue is that, after Terry, a lot of people seem to expect a more western-focused pick for the final character. I imagine that some salt will spray up in that regard, but also that salt would happen with a lot of characters... GameXplain and PapaGenos mentioning Arle probably would help her go down a bit better then she would have otherwise too, as it's harder to call someone a literal who if you've constantly seen her in Smash speculation thumbnails...
Also, if anyone here happens to be good at editing/writing Wikipedia articles, someone removed Puyo Puyo from the
list of best-selling game franchises due to a problem with the citation.
Sega themselves have listed it as their second-largest game franchise, so it definitely belongs somewhere on the list, even without counting Puyo Puyo Quest.