To be fair, I agree with the guy above. Allen hasn't proven to be a 1G material, and that's what they need since they already have a big question mark in Koskinen taking that slot. They just can't be paying $6-7M bucks for two incompetent goalies. As a DAL fan I know that more than anything. Watching Lehtonen and Niemi was just...atrocious, to put it mildly. And to be fair, EDM isn't the team that can move picks without getting solid players in exchange. Just look at how bad they've been developing their young assets to become solid NHLers... Wouldn't be surprised that Fabbri would end up in KHL in 2-3 years and Allen becomes the next Darling.
As for the BUF trade, I don't think Edmundson is that valuable. Based on what he showed in that BOS and DAL series what I saw, he wasn't even in your TOP6 of your defensemen. All of Petro, Parayko, Dunn, Bouwmeester, Gunnarsson and Bortuzzo performed better. I don't see him getting you a first, albeit it's the last one available and a decent RHD prospect. BUF could do better than that.
Last note, getting Lee at $6,5M is a pretty low offer. His production levels match that of Jeff Skinner's, who got $9M AAV contact. Last two years combined, Lee has had 68 goals and 113 points, Skinner has 64 goals and 112 points. Lee might have bad history in playoffs as you said, but Skinner got that contract, and he hasn't played a single playoff game during his career yet... Not to mention that there's gonna be a load of teams after him...there's a strong likelihood of his salary getting in the range of $7,5-9M.
Poolparty could thrive in STL though.