Wouldn't Petey Piranha already be considered a rep for Mario enemies?
Goombas are certainly iconic, but I think we have enough Mario characters as is. In fact I never really thought Crusade needed to add any more outside of Waluigi, but that's besides the point.
The moveset itself is solid. If a Goomba were to be implemented, then I'd want it in as this, but I also really don't want another Mario rep in this game; other franchises deserve more time in the spotlight (like Fire Emblem, the hell guys?).
I can't support. But I won't be salty if it gets in.