OK, I'm probably either the #1 or #2 fan of Python on CB, but precisely how would you propose to get python code running on the client via the browser?
(and if you mention "Grail" I'm going to have to throw rocks at you...)
Q: Can you add this new feature?A: Probably not. But hey, the source is linked right above this. You can make your own client that does anything you want. Hey, if it really is a rockin' idea, I'll even port it back to mine.
That doesn't sound like "hesitant"... it sounds more like "not interested in doing it myself, because what we have is good enough, and I haven't seen any ideas that are that much of an improvement".
On the other hand, making your own client is probably easier than you think. The chat protocol is dead simple--I implemented the 80% that I needed for Frodbot in an hour mostly by watching what the "real" client sends and receives.