I think OP and some posts where it seems like we will have only one type of game, but IMO, games like Odyssey, SM3DW2, Mario Maker2 and brand new 2D Mario could easily coexist on same platform because they are different enough.
I'm not sure what about my original post implied that we could only have one type, but if you're referring to the poll, it was added later and the "no more 2D Mario" choices reflected attitudes in some of the posts I read, I wanted to make sure they had an option to choose. If I'd noticed the "Mario Maker is the end of 2D Mario" posts, I'd have put that in the poll too, but I don't want to reset the poll so I'm not adding it.
I personally am absolutely certain we will have more than one type. I mean we already have Odyssey and are apparently getting NSMBU, and the NSMB series existed alongside 3D Land/3D World on two systems now, and Mario Maker seems destined to get a sequel if not at least a port, so I see no reason why Odyssey style, 3D World style, traditional 2D Mario, and Mario Maker couldn't all exist on Switch. In fact I responded to Bofferbrauer saying I liked his idea too and I don't see why Mario Maker couldn't include 3D elements as well. We're limited only by what Nintendo is willing to try, and they don't hesitate to give us all the Mario we can handle, so you can bet we'll get 2D Mario eventually, 3DW2 eventually, Mario Maker 2 eventually, and maybe something new entirely someday. This thread wasn't really asking if 2D Mario was done, but rather what Nintendo could do to switch that particular type of Mario up a bit, because a lot of people think it's gotten stale lately with the current style. I really hope they do change up the style a good bit, if not a complete overhaul, because really, NSMB is the first time in 2D Mario history that we got multiple games in the same style, and while that's not inherently bad I think Nintendo overdid it.