Those who are are sniping at soon-to-be IAH Skywest pilots are gonna need to switch to shotguns. Check out the new 70-seat feeder for CO in EWR starting in about a month or so: Shuttle America. If you think the IAH "experiment" is an isolated incident, think again.
Starting a jumpseat war is just going to create animosity and lower the professionalism of this career yet another notch. Not to mention, even if the proposed blacklisting tactic succeeds by preventing one pilot group from flying the contested feed, there will always be a lower bidder willing to step up. Neither that nor a jumpseat war is an intelligent or mature solution. Intelligent negotiation and strategy is the only way to solve the scope problem, not intimidation and friendly fire.