This. I was scrolling down for a while before anyone mentioned it. Commie is a good depth signing. Say another defenceman gets injured along with White, if Commie wasn't there who would you throw in? Don't say Smith, because with White AND another man out, he'd already be in. You can't have an entire blue line of prospects or it wont work. He was signed for depth, he's being used for depth. Don't see what's the problem. It's not like we're rapidly eating up cap space.
If another defenseman is injured, Smith is the answer; Commodore is the spare and with White out he's slotted to play regularly. Assume Kronwall doesn't come back from the hit the other night, and both Smith and Commodore are in every night. Probably end up with Lidstrom/Ericsson, Kindl/Stuart, and Smith/Commodore to start.