Super Mario Party Jamboree has the potential ... In the summer of 2014, McDonalds offered Mario Kart toys based on Mario Kart 8 on Wii U. McDonalds would bring back this Mario Kart promotion ...

Play a near-limitless number of Super Mario levels created by Nintendo and players around the world. Create your own Mario levels by using the Wii U GamePad touch screen to add enemies ...

In case you didn't know already, amiibo are NFC-ready toys which offer connectivity features with games on the Wii U, 3DS, and Switch, but also serve as highly-detailed and very desirable trinkets ...

And it already had the Wii U GamePad and stylus ... and drop items in a 2-D Mario game. I don't believe ideas are anywhere near as important as execution, but with Super Mario Maker the ideas ...