I'd want to see:
- Roy from Fire Emblem done in a more conventional fighting game style
- A Mega Man that makes more use of his wide arsenal of weapons (and maybe even copy certain fighter's weapons?)
- A finished Vent...I'm aware that N-Mario made a Vent, but it's not entirely finished last I checked.
- More high quality original characters
- "Evil" Dan because I could really use a laugh while Dan fails at doing an SGS

There's a lot more I want to see, but these are the ones I want the most.