Left JB for United in April , so I am one of those guys , 40 percent trying to jump over here is def overkill. Approx 3400 pilots and nearly half trying to come over !?!?! That's a bit of a stretch , esp for the millions of guys hat live in or near Florida bases , Plenty of 3 year or less guys would bail if they had the offer . (I was a 4 year guy )
As far as overlap I don't really see it , besides the vicinity of JFK and EWR I see little to no overlap . Sure some gates would have to be swapped and you'd have to make Delta and American happy , but otherwise I would never say it's impossible and they DOJ would never allow it , the correct lobbiest and money to the right people ANYTHING is possible , likely no but possible.
The people that make these rules are for sale just like most of the government .
However JB is what a 12 billion is company at this high market , I say nothing happens till the next down fall which is when Mergers tend to take place , minus the outrageous price Alaska just paid for Virgin's hot flight attendants . Which is pretty much all they got in that deal.
I do agree tho a LLC is in United future, not asap but down the road .