Only guy that's really undersized is Brannstrom, but I agree that we could use more size The rest, JBD, Thomson, Chabot, Wolanin, and Zaitsev are all 6' + and 190 + which isn't big, but far too undersized seems hyperbolic. It would be great if Jaros pans out to add the big body we lack though, until then Boro will be on his own in that regard.
In an ideal world, you have 1 or 2 in your top 4 that provide the size, but things seem to be shaping up that we will have to fit size into our 3rd pair. Guys like Jaro and Boro can add size, but I wouldn't want to count on them shutting down an Ovechkin and Wilson line.
In terms of who to move, I don't think you get enough value from Wolanin to rationalize moving him right now. Might also be hard to find a trading partner that has the Dman we're looking for but is also looking to acquire a guy like Wolanin.
If Barron slips to our 2nd or in reach to trading up for him, he might be a good target. Not sure where he sits in the rankings these days.