I found that compliance was a persistant problem in my game as well. Players were constantly forgetting to apply the bonus to someone.
While I see your argument PS, I don't think the flat +1 dodge bonus is unbalancing. After all with full attack actions, AoO's, TWF etc, there is the potential to use WF multiple times per round as well. In fact I would bet that in game, on average, the number of attacks a typical melee PC dishes out is about equal to the number of attacks they are subjected too. Non-melee PC's, especially archers, likely make more attacks, on average, than they are subjected too.