Did a playtest of Raiders of Shrieking Peak, and one of the other players noted that two weapon fighting is now pointless. Why fight with two weapons, and incur the multi attack penalty for an 'inferior' damage weapon? I may have a solution.
New feats. (Yes, I know... even MORE choices...) Let's start simple.
New Specialty Basic Action: Raise Weapon. One action. Requirement: You are wielding a weapon. You position your weapon to intercept incoming attacks. When you have a weapon raised you gain a +1 bonus to your AC and TAC, and can use the Parry reaction. This weapon cannot be used to perform the Strike action until the start of your next turn. Your weapon remains raised until the start of your next turn.
New Specialty Basic Reaction: Parry. Reaction. Requirement: While you have your weapon raised, you take damage from an attack that was from a melee source. You bat your opponent's weapon out of the way. You prevent that damage - your weapon takes it instead, possibly becoming dented or broken.
New feat line: Two Weapon Fighting. Can be either General, or Fighter specific.
Two Weapon Offense. One action. Attack. Requirement: You are wielding two weapons. You attack with both your wielded weapons, targeting one creature within your reach for each weapon. You may target the same creature with both weapons. Perform a Strike basic attack with both weapons, adding a -2 for each attack. This counts as one attack for the purposes of multi-attacks.
Two Weapon Defense. Free action. Requirement: You are wielding two weapons. You perform a Raise Weapon action with your off hand weapon.
Ripose. Reaction. Requirement: While you have your weapon raised, you take damage from an attack that was from a melee source. You bat your opponent's weapon aside, and follow up with a strike of your own. You prevent that damage - your weapon takes it instead, possibly becoming dented or broken. If your weapon is not destroyed, you may make a Strike basic action with the parrying weapon.