the_dengle on 10 January 2014
None of those. They sound like a huge waste of development time. I like the idea of tag team mode mentioned by Suke.
I'd most like the stage creator to return and be expanded upon. Most of all, I want to be able to load my own MP3s into the game to use as music for my own stages. I should be able to build custom Bravely Default, Shovel Knight, VVVVVV, Cave Story, etc stages, using music from those games. And the ability to share custom stages would be nice, though not a necessity.
