Option to set designs for customer to be able to download after designing... JPG and/or PDF.
Yes, it would be nice for the client to be able to download a low res "proof" in JPG or PDF. It is an industry standard, helps give the customer peace of mind and converts higher checkouts as they feel confident in their design, but at the same time do not have the high res files to go get it done elsewhere.
I'm wondering if the PDF the user is able to download, after designing, is high resolution?... it appears to be.