Absolutely. We don't just sell hosting. We have SaaS subscriptions to bill too, and we don't know how many licences to bill for these until end of month. Billing them manually is very tedious and error-prone.
Come on WHMCS, this has been requested multiple times by multiple users over a long period. Would be excellent to see this move from "under consideration" to "in action", please? :o)
Anyone know of any addins which could handle the arrears billing?