My list (not big things like stages, that would be DLC, not patches):
- More Stage Builder parts (stuff from Brawl like the conveyor belt, Ice thing, etc.)
- Online Special Smash with Friends
- A Damn "Turn off Stage Bosses" Button
- Allow me to use the Touch Screen on the Menus (I can't tell you how many times I've went to tap a button and it didn't work)
- Allow "8-Player Size" for Custom Stages, where it would have to reach a certain weight to be saved.
- Make the weight limit for Custom Stages larger.
Also, yeah, make the Stage Builder not terrible. I seriously spent 30 minutes last night trying to get the game to recognize a single ledge was supposed to be grabbable. It was a 90 degree angle, so it's not like it should have been hard.
Use the grid by pressing X, then draw the edge (don't tap).
That's how I got it to work.