Meh. Didn't give anything up, didn't get anything in return.
If I were trying to be negative, I would complain that a 7th/8th defenseman could have been easily signed as a UFA for free. Or something like "Murray should have known that Hendry/Guenin/Guentzel/etc would not cut it." But the cost is so minimal that that would just be nitpicking. And really, the true backup defensemen would probably be Lindholm/Vatanen.
It does seem like we've been perpetually looking for 7th defensemen though. Year after year. I guess it's the nature of a 7th defenseman though. If they were good enough to keep, they would become a #6.