Yosharian
Arcane
As an aside, here's what I did with some of these feats in my homebrew in order to make them less shit:
* Improved Critical: if a character takes this feat and uses a weapon with the Keen quality, whenever they roll to confirm a critical hit, they roll with advantage.
* Weapon Focus: every time a character with this feat gains a new iterative attack, the bonus granted by this feat increases by 1.
* Weapon Specialization: every time a character with this feat gains a new iterative attack, the bonus granted by this feat increases by 2.
* Weapon Focus, Greater Weapon Focus, Weapon Specialization, Greater Weapon Specialization: every time you gain a level, you may change the weapon affected by this feat to another weapon that you are proficient with. If you do this, you must also change any pre-requisite feats to the new weapon, as well as any feats that have these feats as pre-requisites.
* Greater Weapon Focus: now grants advantage on attack rolls instead of a +1 bonus.
* Greater Weapon Specialization: now grants advantage on damage rolls instead of a +2 bonus. This only applies to the base damage roll, not additional damage dice. In addition, whenever a 1 is rolled, re-roll the die.
* Shield Focus: every time a character with this feat gains a new iterative attack, the bonus granted by this feat increases by 1. Also grants proficiency in all shields, including tower shields.
* Greater Shield Focus: this feat no longer provides a direct bonus to Shield AC. Instead, it doubles the bonus provided by the Shield Focus feat.
* Shield Specialization: this feat functions as before, except that you may choose a new type of shield each time you gain a level. In addition, you may add your entire shield bonus (including the bonus from Shield Focus and including enhancement bonuses) to your CMD.
* Greater Shield Specialization: this feat functions as before, except that you may choose a new type of shield each time you gain a level. If you do so, you must also change the shield type chosen for Shield Specialization.