I was persuaded by TR to look once again at Ubercart for what I need, given the tremendous amount of work that has been completed recently. However, unless I'm completely overlooking something, UC doesn't cover PayPal subscriptions.

The uc_recurring and uc_subscriptions modules will only work with Credit Card payments.

I need a module that will provide true PayPal Subscriptions:

1) Adds a PayPal Subscription product feature with all the same options as are available when creating a button using the PayPal subscriptions wizard

2) Allows the user to click on a link and -- instead of going through the Add to Cart >> Checkout >> Review Order >> Submit Order process -- be immediately transferred to PayPal (using Website Payments Standard) for payment processing

a) The module would create the Order in the background
b) The recurring transactions are handled by PayPal, not UC

3) Processes notifications as they are received from PayPal, with appropriate actions taken for each

4) Interacts as appropriate with uc_roles and uc_affiliate

5) Provides hooks similar to those provided by uc_subscriptions -- I would use this in a custom module to assign a role each month as the subscription payment comes in

6) Provides subscription management for admin and customer similar to uc_subscriptions

As I see it, this module would have a wide acceptance in the community. Is there a possibility that someone would consider it for development?