Quote Originally Posted by BowStreetRunner View Post
Just like Tripping, Disarming, Unarmed Strikes, Grappling, Two-Weapon Fighting, Fighting Defensively, and a host of other abilities that have a standard mechanic and then an improved mechanic achieved with a feat the idea seems to be to provide an option with very limited value - something they can use effectively under certain circumstances but have to really wait for opportunities to arise. Feinting when the enemy doesn't have the option to withdraw (after all, only the starting square is not considered threatened for purposes of AoOs) would still be a viable option, it just isn't going to be a regular 'go-to' attack like it would be for someone with the feat.
Tripping, Disarming, and Unarmed Strikes are a lot more worthy of use and cannot be defeated as easily as the Feint.

For example, you don't have to wait an entire round for any of them.

With Tripping, you lose your attack, but you gain the attempt to trip your foe right then. There's benefit to attempting it.

If anybody can just Withdraw to defeat a Feint, then many times, a Feint is worthless.