I can also fully appreciate how it sucks to not be able to get the pair(s) that you are looking for or feeling that they are way too expensive. However, I don't see how Oakley has any obligation on their part to accommodate that, besides that it would be very appreciated by some of us.
You're right in that Oakley doesn't have an obligation, but there's only so many Black/Grey sig series glasses or Brown Smoke/Bronze colour combos that they can put out in the regular lineup before a person will ask "Why?" Especially when they are more than capable of putting out cool glasses. I wonder, can 4 variations (I'm just exaggerating here) of Black/Grey be selling all that well that the addition of a 5th edition will sell more than an original design like C100?