Well - I kind of did create the Tiger aspect with Faith in mind. Just as I created the Phoenix Aspect with Buffy in mind.

The point about Kendra deferring to others is also very good one. But usually the one she defers to is Giles - who she considers to be her superior - according to council rules. If you notice - Kendra is all about following the rules and keeping order, and that she seems to be studious( more educated) than Buffy or Faith. Also Kendra is about thinking & rationizing, while she considers her emotions to be a weakness. These are also traits of the Dragon.

While Buffy and Faith are more emotional fighters, although in different ways. Buffy tends to uses her emotionals, in addition to her instincts, wisdom, resourcefulness & experience. Where as Faith uses most just her instinct, emotions, cunning, and experience. Note that - Buffy even tells Kendra that her emotions give her "fire". Which is the kind of statement that a slayer of the phoenix aspect would say.

But then it's not always easy to compare a young slayer with their possible aspect.