Originally Posted by Navmode

What I believe will happen:

Some mainline carrier will find their most profitable contract carrier, buy them out, and staple everyone to the bottom of the seniority list. No more scope to worry about limiting seat capacity, and they would be able to take advantage of the cheaper regional flying at cost. It's basically a flow without the shenanigans and technical red tape.

I can see many people at X carrier accepting a status quo contract renewal if they had a mainline seniority number, and were just waiting to move into a 737/a320 or what have you at normal mainline pay rates. Pilots would come out of the woodwork for an opportunity like that, and every class would be full. The first mainline carrier to do such a thing would not only have the pick of the litter, but would set the tone for the way the industry will look for the foreseeable future.