Considering Switch is to Wii U as Wii was to GamrCube, graphically speaking in my opinion, I'll say SMM2. A new SMB game won't have that huge leap that U did over Wii, so I find the more creative customizable one to be more appealing. Maybe when the Switch sequel is out, and hopefully it will be in 4k and be the next big leap, I'll want a brand new 2d game. As it stands, if they did another one on Switch after the U port, it will probably just feel like dlc of the U port rather than a brand new game since it won't be a big visual leap. That being said,not they changed art styles entirely then disregard everything I said and give me that!