The old “unicorns & rainbows” phrase is a hackneyed straw man that’s been overused to shut down anyone who advocates turning down a present deal for something more. Before TUMI got shut down, there were a lot of people using that same attack against those who spoke out against it. They found themselves on the wrong side of history in a matter of weeks, not months or years. “Money on the table” isn’t always the right choice & it isn’t always the wrong choice- It’s all about circumstances & context.
Having said all that, I think you’re smoking crack if you think Delta’s TA wouldn’t pass here by a lot. I’d have to run numbers as I’m far from an expert on their contract, but if it were a true Delta match (reserve rules, vacation, profit sharing, etc.) I’d probably be inclined to vote for it myself.