You're absolutly right about a scripted theme system providing more enhancements, but at the same time any kind of intergrated support would be a step in the right direction imo. I mean, maybe start with simple additions like what i suggested, then move on to more complex methods that have more control, and evolve it as people see fit.

Granted it wouldnt be the best theme system mirc has ever seen, but it wouldnt be the worst. It also would provide people with little to no experience in scriping the ability to custimize more settings in mirc.