Would love to see this made compatible with cubepoints.
Earning and spending points made using the cubepoint plugin api would be a dream.
Also, it would be neat if you could somehow run a custom function after a user buys certain products. For example, on a social based site, a user could buy the option to change their username or site permissions, etc. Entry of this custom code could be done via a text box in the product creation page or a drop down that lists custom functions added to a folder (ex: shop_scripts/change_username.php). Then when a user purchases that option, it runs the script.