This is an excellent suggestion. In fact, Awasu already tracks this information, it just doesn't use it for anything yet
One thing I've wanted to do for ages is make Awasu smarter in terms of watching what you do and then trying to adapt it's behaviour accordingly e.g. determing what your favorite channels are.
But I've been tied up implementing core features to date. Once Awasu starts archiving content, it will be able to store more meta-data and analyse your behaviour across the life of the channel which allows for some intriguing features.