Charging is generally considered inferior to just standing there and waiting for your foe to charge you, so you can use your awesme swift/lightning attack/two weapon wielder combo.
The +10 bonus is not a good way representing a charge imo. Running towards someone is actually a good way of decreasing your chances of landing a blow, but you might do more damage.
So how about a bonus to damage when you charge? How about ditching the +10 bonus, but adding the tearing quality tp the attack? Weapons that allready have the tearing quality could get concussive maybe? Or how about a flat +d10 damage?
I haven't really thought this through, but it's clear that many people are unhappy with how the charge mechanics are handled right now.