The good thing, for all those involved, is that there is a large number of former YX pilots who have moved on and probably won't return regardless of SLI results. The majority have gone to VA, Airtran, Allegiant, JetBlue. Others are at Evergreen, Falcon, Emirates, Air Cargo Carriers, FAA,GJ... 18 wheelers.
That should mitigate some of the pain for the folks at RAH/F9 with the SLI. I'm sure there will be a bunch of exYXers who will accept an integration, but by the comments on this board the time frame for that to play out could be very long.... and the results ...well, lets just say, low expectations will be the key to happiness.
Good Luck to All!