[boost] Why is operator. not overridable?

Hi, I was wondering, why is overloading operator. (period) forbidden? It would make a few odd applications possible (dynamic inheritance and transparent remote method invocation spring to my mind) and it would be fairly generic. The only sidecase I can see is that operator. itself would not be looked up through operator. . I read that there was previous debate on the subject, but I haven't been able to find why it was rejected. Thanks, Peter