I think that the Rakash should have a version of the 'slink' verb while in their moonskin. When I picture my Rakash out on the hunt then, I like to think of how a wolf would actually move during a combat and incorporate that into my fighting. A wolf would naturally stalk about it's prey, and while this isn't technically 'slinking', stalking is already spoken for.
Also, along on the same vein, maybe there could be a special fighting modes for Moonskin, ie.: Feral, Stalker and Standard. Feral mode could give bonuses to things like Evasion and Brawling but sap stamina. Stalker could grand more defensive abilities like Shield and Parry while weakening offense. Standard would just be a normal mode.
Lastly, a new howl. Something like 'HOWL summon', which could potentially call a NPC wolf to aid you in combat for a short while before leaving. Could put it on a CD timer so that it can only work every couple of hours, and that the number of wolves (none to a couple) summoned vary depending on room landscape (city, seaside, wooded, etc...) as well as a Charisma check.
Cyclone Malzian Amunduil, Mist Mage of Elanthia
"If you can't beat it alone, get the pack. If the pack can't beat it, get a larger pack."