1) Create the voucher like it is in OC 1.5.x
2) The same with checkout , in one page and the ability to use coupon/voucher. In case we use new address, autocomplete will be used in the fields.
3) Add an option (colors) in products instead of creating it each time we add a product. Part of it is already created but it can't be added in cart. Along with the fields already used in options tab, the color field will be added.
4) A small fix for "add to cart" button. Use the animation it has and update the cart in the header.