How can we improve WHMCS?

Although code could be added to a provisioning module to address additional logic, it may be more suitable to add the code once the module action occurs (e.g. Renew).

The AfterModuleRenew hook would only need to same params array input similar to other AfterModule hooks.

For good measure add AfterModuleRenewFail to maintain continuity with other AfterModule hooks.