Auto-Add channels to "favorites" based on suggestions?

[NewYorkLaw]

If tivo suggests shows that I actually like that are available on channels I don't have listed as favorites (sometimes because I did not even know about the channel) perhaps the channels could be automatically added to my "favorite" channels list. Or, maybe after a threshhold is met, say after I've given thumbs-up to 2 or 3 shows from such channels?
I have discovered a couple of cool channels because of suggestions.
Pete