do you value Sandin higher than a late 1st rounder at this point though? That's all I'm saying, drop the Blais+2nd, add a 1st from the Leafs side then the Blues still get as good of value (better because you keep Blais+2nd) and the Leafs keep a guy who has a chance to be ready to play on an ELC when they'll need him where I doubt that matters as much to the Blues
Keep in mind that Sandin is a 29th oa pick who's played 13 games since his draft, he's at least 2 years away from contributing. I don't see how any reasonable person values him way higher than the Leafs upcoming 1st round pick which is in a notably deep draft and could end up being considerably better than 30-31st oa, that would be assuming we're going to the cup finals and there's some very good teams in the east
He is valued higher than the pick because he does have upside and is holding his own in the AHL. He would be ready before any pick in this draft. If you didnt value him then why do you hesitate in adding him when you could use the pick to grab a better prospect.