Even so, you're giving up a Gonchar jnr. in Jillson, a good two-way player in Samuelsson and a 1st rounder for a guy that you'll have for a few months (since we both know that the B's aren't going to spend money on Gonchar).
Gill/Samuelsson/2nd rounder would work just as well for Washington, as they get size on the blueline, a good two-way player, and a potential second or third line player in the draft.