Definitely don't need to get into yet ANOTHER "shiny and pretty on the outside, just as black as some Legacies on the inside" kind of carrier...
The likelihood of getting canned at a Legacy carrier, with solid union representation, just for asking a question or some other frivolous reason is zero.
Lear, the "shiny and pretty" thing is a fast upgrade in a shiny new jet at a start up, the downside is a lack of good representation when you get in trouble or some manager has it in for you.
Don't associate what happened to you at Airtran with "just as black as some legacies."