2. I think it would be a good idea to add some more settings for the single product page.
Iam missing the following options for the single product page to show or hide these elements:
-Display add to cart
-Display product images (featured and gallery)
-Gallery thumbnail columns
-Display sales flash
-Sale flash over image
-Maybe show and hide option for all single tabs (Description, Reviews, Additional information)
I also tried to add some of these settings to the existing customizer page. But as none of the default GP-controls have a priority, I could not reorder my fields to the exact place (under the single description controls). ;(
I dont know if you will consider adding priorities to your existing customizer controls.