Pouliot is already the defensive conscience for the McDavid + Yak line, I like Dubinsky as a player a lot, but I don't see the fit he won't be a top 6 center with Nuge and McDavid here and we can't be allocating anymore capspace to the wing position. Given what Pouliot and Hall make I don't want to be bumping either one out of our top 6. If we were to make a pitch for Dubinsky I'd want Pouliot going the other way as part of the package so the $$ make more sense.
Hartnell isn't going to hold up his current level of play through the entire duration of his contract, he'd be great for us now, but at the end of that we will be overpaying him by a ton in all likelihood and again we are spending too much on the wing as is.