There is no such thing as a 'regional' jet. They have been used to replace 'mainline' flying and the word 'regional' has only been used in order to allow payscales to be much lower.
Define "Regional"?
BTW, some of the flying we do now on the CRJ is maybe "regional", from a major hub to a tiny airport that never had mainline service. For this they are OK. But for all other flights, like from IAD-ATL, PHL-MSP, CLT-MKE, etc. they are not accaptable.
RJS are hurting the industry and our career chances.
I don't blame the pilots (because I am one of them), but the industry uses them in a poor and exploitive way. Passengers hate them.
The EMB-190/195 is under no circumstances a "Regional" jet and should be flown by mainline carriers and pilots. Same for the 170/175.