I know Blues fans don't like the oilers trade but keep in mind, when you are rebuilding the most important thing to have is a bad goalie. That Mrazek trade gave Chicago Connor Bedard
That EDM trade is suicidal. You could remove Binnington and the Blues still run away screaming NOOOOOO. And even if they did do that trade, Campbell would almost never play.
I think something like this is the best course of action for the blues. I wouldn't take Campbell back in a deal but the overall idea of this is correct IMO. Get some assets and capspace. Doesn't need to be a full year down rebuild but they need to turn the roster over a bit and this gives them the assets and space to do so.