Nice post
I enjoyed reading your post KPT. I think you have a good point that RJ's allowed airlines to serve marginal markets, and that probably led to more pilot jobs.
My problem with the large RJ's is that regionals are operating large RJ's that are replacing mainline jets. I think these 90 seat jets should exist, but I think probably anything 75 and under should go to regionals, and anything 76 or up should go to major airlines at major airline pilot pay.