Aww. That feels nice.
Just found this online....though I'd drop it here (it was made before Incineroar was revealed btw)
View attachment 188926
Wart and Tatanga would be very cool retro characters to get into Smash someday. I think Wart would deserve it because of how much Doki Doki Panic changed the Mario series by including Bob-Ombs, Shy Guys, and Birdo. Think about it, could you imagine how different Super Mario 64 would be without the iconic Bob-Omb Battlefield and King Bob-Omb? I don't.
Tatanga would deserve it because of him being the main antagonist of the first portable Mario game and Super Mario Land being one of the best selling Mario games of all time having over 19 million copies sold worldwide. Daisy debut in this game and Wario debut in the sequel, so why didn't this guy return? He should in the future.
I think people overlook Wart and Tatanga as possible unique retro reps and don't look into their games importance to the Mario series. I think after Game & Watch, R.O.B., Duck Hunt, and Piranha Plant, they could be very likely contenders for the next retro rep if we are going by their games importance and perhaps a pattern on who in Nintendo history after those characters would be next in line. I know Piranha Plant isn't technically a retro character, but look at the timeline for when the retros debut:
Game & Watch 1980.
R.O.B. 1985.
Duck Hunt 1985.
Piranha Plant 1985.
So as you can see, the retro characters and Piranha Plant debut in that order which, is the same order when they were included in Smash. If we are going by this pattern, than the next possible retro rep probably has to be a black box character like the Ice Climbers or somebody from Doki Doki Panic. I know the Ice Climbers are retro as well, but I'm just going off by the pattern of the main retro characters in Smash.