I'm not sure I'm seeing a parallel between the pay and safety. Don't get wrong, I think regional airline pay should be much higher than it is (especially for F/Os).
But what statistic are you using to say that lower paying airlines have more crashes/fatalities than the higher paying airlines?
I don't see the connection.
Pilots have proven time and time again they can fly just as well for free, if not even actually paying to fly in the right seat (Gulfstream Airlines... no fatalities).
Do I agree with paying to fly right seat? No.
But I fail to see your connection between a lower paid pilot group being more at risk for accident than a higher paid group. Mesa (lower paid) is just as safe as Skywest (look at their previous accident history).