Herremann the Wise
First Post
I would extend this slightly by matching the number of times you can change your facing equal to your character's dexterity modifier (minimum once per turn). Alternatively, it would make a somewhat low powered feat unless it also gave you some sort of dodge AC bonus as well.Also, if you are going to include facing rules, you should expand them to make changing your facing an immediate action; this allows you to do it once a round on any character's turn. That way, you can't repeatedly pirouette around each other. You might also want to expand the feint rules, to make it possible to deny your opponent a chance to change his facing on your turn.
Just a thought.
Best Regards
Herremann the Wise