IMO you somewhat have to be a politician to do the job.
you aren't going to make everyone happy. Its impossible.
You also have to realize that you can't just walk into the room and get every little thing that you want.
Having said that, I hope your union doesn't bring you back a turd like the United IAM did just to get a deal done and a quick raise. More importantly, if they do bring back that turd I hope you guys vote it down.
and if you took Delta +3 (or 7 or whatever the flavor of the month is) for US scope, you will simply pay for your raise with all the lay offs you will cause.