The moment I watched the (boring.. yeah I'm not into that entry at all as it seems like another Fire Emblem one) Pyra trailer, that came to mind.. and I'm not sure if I said this before (I think I did), but we've already created a whole plan for the Goemon gang wink
However, and unfortunately, what that trailer says too.. is that Mii costumes have a none to low chance of becoming full characters. I mean, if sakurai himself said he wanted Rex (I think), he avoided the conflict of having him as DLC. Now that's said, Goemon could still has his chance because the character would be a 4-in-1 situation, meaning there's no conflict whatsoever.. and yes, another wink
As for the new game.. who knows, stay hopeful. Konami is going full on their store.. maybe they're gauging their next entry by the merch count. There's actually a hidden hint.. if you look closely at their shop you'll notice something weird.. however might spell good things for our hero.. can you tell what it is?