A lot of the patches has been bad news for some users (AMD MP4 being laggy and sped up at 60FPS, for instance), so we can either not use Action! at all, or a specific feature.
A degrade option with every known stable (no problems) version would be absolutely awesome, so that if a patch happens to mess up something, we don't have to wait for a new patch to fix it because we could just downgrade to the version we loved.