How about a Kitsune burning 3 feats on magical tails to qualify at level 6 instead of level 9 ???
I thought the only reason those feats were in the game was to get the early access... maybe someone can find another benefit though
I have a character I'm building around getting as many of the 9 tails as she can (she'll manage either 5 or 6).
In order for them to be useful, you have to have a decent CHA, and feats you won't miss. (Mine are on a FIghter with a 15 CHA.) They'd also be fairly useful for a CHA-based multi-classed caster, since their DCs are based on your total character level.
Obviously, they'd be much more useful in an urban or espionage-based game than one focused mainly on combat.