|Darksol the Painbringer|
You do realize, that even in PFS, you can reflavor traits.
It's not overpowered, and I feel you are seriously blowing it out of proportion.
That's my feelings on it anyway.
Also, if you must drop other editions, and gloat how good they are, then my only response can be, go play it instead.
As an option to take? It's not overpowered. It's no more overpowered than using a +2 sword over a +1 sword. I don't think the problem is that the option, in itself, is overpowered.
It's the relative power level in comparison to the other options available. Instead of taking a +1 to all Will Saves, or a +2 to Saves V.S. Mind-Affecting Effects, which are the other most common trait selections, you can instead take a (potential) +1 to Attack, Damage, Skills, Ability Checks, and of course, all saves (not just Will Saves).
Any braindead person who knows how to math will tell you that the +1 to (effectively) everything will be better than the +1 to just one sub-thing of a thing. There's been marketing schemes that examplify just that.