Sometimes your golf club buddies give you good ideas. In this case, probably not. As it stands, I don't think this one has the votes.
This will probably get enough votes eventually or get put into some other bill with some pork. The associations representing Atlas, Spirit, Frontier etc. and Association representing all the regionals are for it. Polling shows 40% of SWA pilots are for it, and there are sizable groups of pilots at other airlines as well. The public will hear that this can alleviate their cancelled flying crew issues so it’ll get support of voters with RJ, ULCC and SWA service near where they live. After covid bailouts no one is going to want to listen to well paid airline pilots bitch about how their career expectations and earnings are harmed again.
Unless international laws change, the only saving grace this time around is the extenders won’t be able to hang out on top of a seniority list doing international flying. They’ll have to suffer through domestic flying.
Legacies and FedEx/UPS will probably still have some movement on the seniority lists but there will probably be stagnation and reduced hiring for a couple years once this passes.