What I think would be great is when i can make a sub colllection in my store. Like:
Store>pants> short pants / pantalon / etc or Store>shirt>casual / dressed / etc.
Also, it would be amazing when we could ad a customizer / colour picker etc to our stores so we can let our clients see exactly what they are buying (if you have options for a product in size, colour, finish etc.)
Hopefully Wix is on it 