I don't know the accuracy differences from each side of a mob for higher content, but that's another incentive for you not to combo from the front. So it shouldn't force you to go for any more accuracy then what you have to get now. It's only meant for solo and special situations.

I'd rather have a way to attack my target from the front; with a lower chance of connecting, then to have no option other then the base potency you get stuck with now.