I'll bite. I'd like to see the union for: bases, pay, day one issues, last day issues, job action security, guaranteed recalls at released terms, and any future changes which may come that aren't in play right now.
Union at flex wouldn't be so bad. Management/labor relations aren't horrible and a union wouldn't change that. All it would do is give labor a seat at the table.
There's nothing to fear except fear itself. I think non-union folks are afraid of change and that's OK. My grandma was scared of the auto-mobile once but in the end she embraced them and couldn't live without one.
It's easy to create a wish list, now list the things you're willing to give up to get them. It's a negotiation so nothing will be free and everything is fair game.