For some time now, we have been working on a new feature called "smart channels". The idea is that you can create a channel based on episode tags. Say you have two different channels, both with 5 episodes. In each channel one or more episodes are tagged with "sport". You can then create a third channel - a smartchannel - based on all episodes tagged with "sport".
Currently the feature is available to selected enterprise customers, but we are considering making the feature much broader available. If you think that this is a good idea, please let us know.