Kinda a response to my profile post from yesterday: while I do think that World's roster is underwhelming, I don't think it's outright bad. It's lame that all the newcomer picks are pretty much just a bunch of generic species, I do think there is some actual merit to adding a bunch of generic species (even if they shouldn't be quite as prominent as they are in World's roster), and most of World's picks are fine at worst in a vacuum.
Goomba and Pianta were, honestly, at least a little overdue. Moo Moo is hilarious as hell and actual great joke pick, Cataquack has been an underutilized species in the series and is finally getting used again for the first time in 13 (?) years, Conkdor is also a neat enemy that looks silly (in a good way) on a vehicle. Out of all the generic species, only a few of them feel like duds.
If even a few of the weaker links among the generic species were dropped in favor of specific characters, I think World's roster would work fine. Would I prefer to lean far more into specific characters for MK additions? Yes, absolutely. Setting aside potential development limits, would a primarily generic species newcomer lineup be something I'd go for? Probably not. But could it still be a good roster? Yes.