Currency Selector in the Frontend [Feature Request #3344]
Multi-Language Support [Feature Request #1404]
Product Syndication/Data feed management [Feature Request #3569]
better Template System, spearation of Code and Design [Feature Request #3079]
DHL / FedEx / USPS Shipping modules
Related Products
Meta Description/Keywords for products
Quick-Add: Discount on *all* Products
allow "send as gift" with individual text on order
add/edit/delete States for Countries
streamlined Checkout
Shipping based on Cart Total
Shipping Total as percentage of Cart Total
Price Quantity breaks / Volume Discounts
Allow "Copy product" to simplify building up the product database