I'd be totally fine with Blake trading assets, even first round picks, to fill holes IF the players received were younger and had years left on deals.
Deals like that are extremely unlikely with values how they are, so I can see Blake making minor moves to try and fill holes. I would be fine with bringing in another Folin type or vet who is solid, but without that flash that sets them apart. Defense is the obvious glaring hole, even with the recent improvement of Gravel/LaDue. That depth is needed there. I certainly don't want to see assets for rentals or overpriced guys at the deadline who aren't going to stick around.
Not to worried about adding a forward, I'm actually fine with the center situation, with Kopitar, Carter, Kempe, Shore, and Mitchell. You have a couple guys that can store, a couple really good defensive ones, and 3 of those are above average at faceoffs. Not the powerhouse center depth of the past, but still better than most other teams. If you can get a journeyman guy with a history of scoring for a cheap price, you do it, but no reason to try and force anything.