A credible last resort changes behavior early
Most chapters will never send a single balance to collections – and that's the point. The reason long-overdue balances exist is that everyone involved knows the chapter's only enforcement tool is a group-chat message. When a real escalation path exists, the calculus changes months earlier: reminders get taken seriously, payment plans get accepted, and balances get resolved while they're still easy to resolve.
Dueflow's reminders, late fees, and payment plans already handle the vast majority of overdue balances. Collections is for the residue those tools can't reach – the graduated member, the one who went inactive mid-semester, the balance everyone has quietly written off.