Mmmm this would be something that would interest me greatly if it turns out okay. I won't dare order one till some good reviews are out. It would also need to have an open slot to put the carts in for me to be interested. I dislike that the circle pad pro covers that up.
If it left the cart slot open, and provided a decent design that wasn't too clunky. (Which it does kinda appear to be less bulky), with good performance then they will definitely get a purchase from me.