Boardroom Meeting Suggestion

1 word: FORTNITE.

Smash Bros. is a collection of all sorts of well-known game franchises, and all you need to get in is to have at least 1 popular game on a Nintendo console, which is how Joker got in. Fortnite is one of the most popular games In the world, and it's on the switch.
They may be hinting at this, too. Look on the map at Steamy Stacks. The 2 stacks look like Smash Balls on the map.

yes and Jonesy is a character

yup

well steve from minecraft got in so every one can get in

really paper mario has a game in every not portable console (64 ,game cube, wii, wii U, and switch)
even in 3ds really i hope he get added