An interesting thought experiment is "Imagine the regional industry is stable then transitions to unsustainable pilot losses. What would that look like?"

Another thought experiment "If the regional model of February 2019 is not sustainable, is there a smaller model that is?" IE, how many ASM/year can be sold sustainably paying current labor rates and how many airframes does that translate to." If you assume the US can support, say two hundred 76-seat jets, what does that look like?