[SIGNED UP!]
This might be tricky to do based purely on WF Roles as they stand now because in our work, a single person can be an Owner sometimes, a Review-Only sometimes, View-Only sometimes, or Review & Approver on others. It varies by the PHQ routing.
So maybe they could default to a routing role based on WF role (for convenience), but we'd need to retain the ability to change that before starting the routing.