A physics based game where you have to build furniture for different shapes of aliens that would survive a Galactic Summit meeting without incident would be fun. Later stages would involve more heated debates, with the aliens shifting and pounding on the table, requiring more stable chairs for their oddly shaped bodies with moving centers of gravity. If the chair falls, it will be the last straw and war will erupt.
This interview clarified what makes me uncomfortable about Super Mario Run. It isn't that the game is tailored to touch screens, that it is simplified, or that it is friendly for newcomers. The quirky geniuses that make my favorite games looked with fresh eyes at how to make a platformer on a phone... and came to the same conclusion that nearly everyone else did.