Ok Here is what I would want to see:

- Auto levelling,
- neon lights and glow in the dark paint - just for fun
- multi extruding,
- wifi/blue tooth adaptation (to send from smart device to print)
- self containing box/cover to help reduce external factors
- "non stick" surface, I am going through tape like crazy (not installed heat bed yet)
- recycling hopper on the top so you can re-use old prints and plastic
and then I suppost a function that prints money so I can be rich.... not asking a lot I know...