A thread about Stealthy Repossession got me thinking about the difficulty of engaging a single target while using a two handed weapon. I think it would be a nice tweak to have the option of using a stance (that would come free at +1BAB) that would remove glancing blows when using THF.
Your average barbarian might not want to ever use this, but anybody working in group with an arcane or bard throwing fascinates and hypnotisms around would be able to single out targets without inadvertently splashing wakeup damage all over the place.