I agree with this completely. Once I suggested that having accuracy over 100% should grant a scaling chance to Crit... not so much that slotting for excessive Accuracy does more damage than slotting for Damage, but there should be a bonus for getting more Accuracy.
However, I don't agree that the method used to make ToHit be very useful should be linked to a specific power and specific values... on Live, the Devs once stated that the number of active accounts that also used the forums were less than 10% of the player base. That is over 90% of the people playing, who didn't get to read forums to find out how to get 22%. The percentage is probably lower on these servers for various reasons, but still, we shouldn't be creating a knowledge gateway, and on one side of it ToHit bonuses are very useful, and on the other, they're not. And the way to pass through the gateway is to visit the forums and look for the topic.
I'm sure that some people found out from the in-game help chat as well.