On Power Attack.
My 3.5 group has had a lot of PA issues over the years (which I talk about here) and the best solution we had was to play PA as written in the 3.5 PHB but make PA damage not subject to Critical hit multipliers. This gave a decent damage boost but prevented high crit multiple weapons from being game breaking at higher levels.
I'd like to see something like that in Pathfinder.
