
"Super Mario Maker released recently, and it is—quite simply—awesome. It allows players to develop countless levels with tons of options and share them online. With so many combinations available to so many creative people, it is bound to scratch that Mario itch for ages to come. Which raises the question: can 2D Mario games even continue beyond Super Mario Maker?"

Super Mario Maker's last level has been beaten, after Trimming the Herbs was revealed to be totally bogus.

Super Mario Maker has been a great series for Nintendo, but it is time to move on. How about a Metroid Maker? That would be interesting! Check out Jason Capo’s thoughts for more.
I'd go either for Metroid Maker a Zelda Maker would also be great even a Mario Kart Maker as well.

Nintendo has announced that as of Jan. 12, 2021, the original Super Mario Maker game for the Wii U will not be available for purchase on the eShop.
I mean there is a sequel available. My guess is Nintendo will want you to move towards a more current version.
Yeah it can because people still look forward to more co-op action that's present in the New Super Mario Bros series and absent in Super Mario Maker