As far as I've noticed and understood, melee classes in general tend to not have to be hit capped, and I don't just mean the white damage hard cap.
Generally, a caster would want to be 100% capped, but I guess things are a changin'.
Personally, I see no benefit to not getting as close to 15% without going under on my balance druid. Usually I can hit exactly 15%. I'm not logged in, but I think I'm there now.