i would say it was decided that manipulating the channel window, could to easly lead to manipulating the gulable person looking at it, a rouge script could alter the contents of a channel to appear to be something else etc etc.
(comment below is in general not aimed at you)
I think its a bit arogant to believe that everyone can disect a script and what it does, so if a script appears to be ok, alot of people well use it, just that some code hidden in the middle does soemthing else.
Anyway...
A channel window can always be filtered out to a custom window then edited at will, i cant see it being all that hard to make it appear just like a real channel, with the real channel being a hidden window.
