These types of aircraft will eventually wipe out domestic mainline service. Not too far down the road you'll see 150 seat "RJ's". These will be given by mainline to the lowest bidder, and mainline will constantly dwindle their Boeing and Airbus aircraft. When mainline puts out an RFQ to the regionals for these - the regionals will be slashing everything in sight to get em'.
In the not to far away future - the 150 seat aircraft will be flown by CA's making $60.00/hr and FO's starting out at $25.00/hr. This will kill off the "Legacys" domestic flying, and any hope of decent wages in this career if you fly domestic.
Everything today points towards this becoming reality tomorrow.
Pilots are their own worst enemies - and no one is doing a damn thing to impede this process.