What is a "global editor"? (since you mention overruling other permissions - would that be a global moderator?)
Wont setting it to NO instead of NEVER do the sam trick ?? (allowing it to happen automatecly after e.g. 5 approved post when going from new user group)
No, because Newly Registered users are also members of the Registered Users group (as every member is), and the YES wil override the NO, but not the NEVER.