So here's the general idea. Gaia wove the primal spark through the spirits of all her creatures, that they might be protected and kept in balance. It remains dormant in most, scattered through populations, and can be brought to the fore by need or by the actions of those who've already had it awakened. The cosmology is otherwise the same. The Tribes and Changing Breeds are all the same, at least on the basic-stereotype level. (cont)

Weretype is determined by temperment/destiny/whatever else (in other words, player choice)

Auspice (if your weretype has one) is determined by when you changed, which itself is usually tied to some defining emotional moment (a bite can kindle the spark, but it ignites fully on its own).

Tribe/camp/etc is generally self-chosen based on ideology. Factions still bicker for the same reasonable and unreasonable reasons, of course.

Mixed-weretype packs/bands/whatever are much less unusual, the enmities between different species may still exist to some degree, but are not played as universal.