Stat Optimizer target numbers/Variables

The stat optimizer is very nice, however there is a bit of an issue. You are able to select broad categories, but sometimes those categories need specific target numbers. For example, Cooldown Reduction may be important to a build, but only for a specific skill to be up constantly. I can put cooldown reduction as a stat to be optimized, but it will get as much as it possibly can. However I may only need to get enough for one skill, after that the others are more important. If there were a way to tell the optimizer that I need say 12% more cooldown reduction, then don't worry about it anymore it would be more useful, or maybe say be able to tell it that I need a specific skills cooldown to be equal to it's uptime, that would be perfect.