I really like the idea of the carts as stalls idea. Perhaps to make it easier, they could create the cart with a recolorable merchant as one piece, and then have different decorations to change the look of the cart. They could either all sell the same things or make the cart merchandise user selectable.
I also noticed a lot of the things you are requesting could easily go into a spooky expansion, which I have a feeling will be released around Halloween, if not before!
I also noticed a lot of the things you are requesting could easily go into a spooky expansion, which I have a feeling will be released around Halloween, if not before!