I'll be real with you Ura, Andy is someone they should've added back in Brawl, or might've been more likely if Advance Wars didn't do so poorly in Japan. It's really hard to imagine him getting in now,
I'm just going to save my sanity and expect Hanafuda to somehow be the last fighter.
Smash favors final reveals being more inexplicable than satisfactory (G&W, ROB, Duck Hunt, Corrin, Piranha Plant), and if you think about it, they are more likely to deflect mass disappointment by choosing someone so confusing that confusion becomes people's foremost reaction. Either that, or satisfy a slice of the crowd that you can only hope is big enough to drown out the disappointment from the rest.