The AA B-scale was for ALL airplanes, correct?

If all RJ flying is brought back in-house on the same seniority list, with a flow straight to the A-scale dependent only on seniority, would that be acceptable? Keep it exclusively for RJs, protected by whatever is necessary, scope clauses, etc.

If there's confusion with the term B-scale or if the term has too much historical baggage, perhaps rebrand it. The regionals are a defecto B-scale anyways, except with numerous additional disadvantages because they're separate companies and seniority lists.

I wonder why major airlines pilots would not want this. It adds people to the seniority list, which increases job security. Surely getting pushed back into the B-scale wouldn't be as bad as a furlough. Or maybe it's the major airlines that don't want this to happen?