Shades of Oshie to the Caps for Brouwer, pick and prospect but much, much better for the Blues.
Like Oshie, Kyrou us a great player who maybe rubbed some in StL wrong and was scape-goated to shake-up an underperforming team. He's very talented. Washington will hopefully like him as much as they liked Oshie.
On the flip side, Armstrong learned his lesson from Oshie. McMichael is a good player, younger, more fitting with the Blues timeline. I don't think he'll hit Kyrou's highs of 35g, 70p, but still solid. 16th is a great pick for a kicker and I think Gastrin has potential from the little I've seen. Definitely better than Copley, the goalie prospect in the Oshie deal.
I think the team that gets the best single asset usualy wins, so Washington wins here. But its good value for StL.