This. It is hard to see ALPA rolling over on this one. Heck - look how tough they have been on scope clauses, and that is vs fellow US pilots.
Also the demise of commuter airlines is as much about the re-ordering of US domestic aviation as anything else. It just often makes much more sense to drive 90 miles to a large airport with multiple flights per day on A320/B737 than to take a once daily commuter flight from a local airport. 19 seaters are pretty much obsolete, and this "uneconomicness" is creeping up the scale - almost no-one is buying aircraft with less than 76 seats (the scope clause) these days. Paying crew less or importing them won't change the numbers, that the cachement area of airports has been steadily rising.