We dropped the ball on a couple of issues and are working to get them added in for beta 8. Both are very important and not something we can simply leave out.
Custom Fields
Probably the number one feature request we get is the ability to add custom information to items added to the cart. Say you wanted to have a dropdown next to the add to cart button for Paper Type with choices for Matte, Glossy, or Metallic. That's possible in 2.0.
The problem is that we coded for everything but the add to cart button. You can add custom fields to orders, users, coupons, and pretty much everything else. The code for adding custom options to items in the cart just never made it.
As a teaser, here's what the View Cart page will look like by default with custom options set on cart items.

Favorites
The ability for visitors to create a list of favorites and for those favorites to show up on the admin side never made it into version 2.0. The favorites code has been added and will be working in 2.0b8.
Thanks, and an apology
Thanks go out to everyone that has downloaded a beta of version 2.0 and helped us by sending in bug reports. ProofBuddy becomes a better product every time we get a report of something not working. We had planned that the time between beta versions would be very short and feel that we've let our users down by taking so long between b7 and b8. We hope you feel, as we do, that these two features are important enough and worth the wait.