An ongoing list of new feats and adjustments I'd make to existing Feats in the game (class, ancestry, skill, general...) to make them more fun to play with.
Adjustments are in italics.
[3-action] Spray 'n' Pray (Gunslinger 8) (Homebrew)
Requirements: you are wielding a crossbow or firearm with the Repeating trait, and you have at least 4 ammunition in your magazine.
You Strike four times. Calculate MAP as if your weapon had the Agile trait for these Strikes. You may target one or more enemies, but all of them must be in a cone within your weapon's first range increment.
Favored Prey (Ranger)
When you gain this feat, choose animals, beasts, dragons or both funghi and plants as your favored prey. When you roll initiate and you can see an enemy that belongs to your chosen category, you can Hunt Prey as a free action, designating that enemy.
You can switch your favored prey by studying the remains of a creature from another category for an hour.
Elegant Buckler (Swashbuckler)
You've learned a flexible way to position your buckler to provide more protection. When you Raise a Shield to gain a circumstance bonus to AC from a buckler, increase the bonus from +1 to +2.
While you have a buckler raised, if a creature critically misses you with a Strike, you gain panache until the end of your next turn.
You gain the Shield Block reaction. When you Shield Block with a buckler, you use special techniques to deflect more damage away from you. Increase the buckler's hardness from 3 to 5. This does not increase its HP / BT.