I love the totem barbarians (is that what they're called?) in Unearthed Arcana, but what I did for Northern Crown was include "Animal Ancestry Feats" that give you certain traits of your totem animal.
Were I to run Northern Crown tomorrow, taking an animal ancestry feat would be a "prerequisite" of taking a totemic class. That is, a PC taking one of those classes would either have to take one of those feats with its initial allocation, or if game balance demanded it, it would be a 1st level Bonus Feat for the class.
Unfortunately, my current game group (gaming every 2 weeks) is composed of me and a bunch of mud with 7 sticks in it. Thus, the tomorrows of my near future will not include Northern Crown. Nobody is interested in anything that isn't plain vanilla D&D (Core + the softcover class-oriented books from WOTC). One guy (a buddy of mine going back about 20 years) said he'd leave the group if we weren't playing D&D- we can't even get him to try 3.5Ed or D20 Modern. Forget 3rd party publishers, other game systems, other settings...*sigh*
(Damn shame, too- I have a HUMENDOUS RPG collection. I believe in supporting the best exemplars of the hobby by buying them, even if I never get to use the material.)
OTOH, another buddy going back almost as far is moving back to town, and may be interested in exploring other role-playing avenues...