Here's what we need for DLC (or to be announced in the coming months for launch):
1. Slopes
2. Different Yoshi colors (shit, maybe even add like, Purple, White, Black, Orange, Brown, Pink, and Light Blue as well, each with its own power?
)
3. As many bosses as conceivable from the games (so we'd have Bowser, Bowser Jr., Boom Boom, Sumo Brother, Petey Piranha, the Koopalings, etc.)
4. More enemy variety (examples suggested include Banzai Bill and Fishin' Boo)
5. Turnips
6. World maps (based on SMW2, SMB3, SMW, and the various New SMB games - maybe even one based on SM3DW?)
7. Music maker
8. All the power-ups
9. Auto-scrolling levels (are there any?)
10. More themes
11. Playable Mario, Luigi, Peach, Rosalina, Wario, Toad, Blue Toad, Yellow Toad, Nabbit, and Toadette
12. Sprites from SMW2 and SPM
13. Enemies from SMB2
14. Vertical levels