Agreed at a minimum.
However, I have read articles that recommend replacing as flywheels purportedly develop hard spots from excess heat. These spots which are clearly visible before facing are hidden by the process. They then again, purportedly resurface and cause problems with the disc seating / grabbing. Don't know about the truth to the above but figured I'd pass it along. We have had no issues with resurfacing on a stock low power application but have never tried it on a performance application, they have always gotten new flywheels. Maybe someone else with a bit more information will chime in