When Should a Roadmap Priority Be Reopened?

A roadmap choice can be reasonable when made and still deserve a second look when the evidence changes. But revisiting it has a cost too: work may be interrupted, resources shifted, and commitments renegotiated.

Imagine new customer evidence suggests a different feature may address the problem better, while the current work is already underway. What should justify reopening the priority? How should teams weigh the strength of the new evidence against the cost of switching—and who should be able to call for that review?