It will be interesting to see how the regional airline business model in the US will strategically develop in the next few years.
If crew salaries keep increasing, seat mile cost will not make it viable anymore for the majors to have the production outsourced to smaller planes (seat count below scope).
It might well happen that a lot of flying on dense routes will go back to bigger tubes.
Which if it really happens begs the question how well producers of regional jets are positioned, if demand for their product collapses.