How can we improve WHMCS?

As a hosting provider selling a mail service, it would be beneficial if the configurable option values on an individual service were retained when upgrading between products options assigned to different Options Groups.

Currently WHMCS will retain the selected values when the original product and target product are both assigned the same Configurable Option group. However, we need this to be expanded to cover the same options in a different group.

Our options are split between Module Settings (different editions enabling different functionality) and Configurable Options (for e.g., maximum mailbox count). Since mailbox price depends on the edition, each product (each edition) needs to have assigned different configurable options group, even though the option names inside them are all the same.