Here's the list of basic features missing:
Amount labels (Pair, Pcs, Package, Liters etc) Custom out-of-stock message (per product) Custom shipping time (per product) Custom short description for products (Item View) Categories and sub-categories need to be sortable (drag-drop order) Re-order product images Custom fields for products and order detailsAdvanced:
Pre-order purchase (Before official stock) Hide products until launch date (+ notification e-mail on launch)The rest we can do with back-end or modifications, these, we can't (need to be in order details / or API).