Having the options to play existing scenario with a different set of units is good.
Space Wolves do use different tactics, and are interesting to play.

Only 3 scenarios, but they are actually good, they feature defensive mission where the close combat skills of the Space Wolves will be helpful. Some scenarios have 3 or more BroodLord.

Probably the best single DLC, as of august 2015. Yet it is expensive. Get in in a pack.

Having the options to play existing scenario with a different set of units is good. Space Wolves do use different tactics, and are interesting to play. Only 3 scenarios, but they are actually good, they feature defensive mission where the close combat skills of the Space Wolves will be helpful. Some scenarios have 3 or more BroodLord. Probably the best single DLC, as of august 2015. Yet it is expensive. Get in in a pack.