Relabel channels in guide

I would like the ability to adjust the channel labels. This would be useful when multiple affiliates of the same network are received or when the guide services labels them poorly (such as the PBS subchannels all listed as PBS). This might be had to implement on the streaming devices apps, but would be helpful on the PC/Mac/web interfaces.

Options to bookmark channels and to adjust to sort order, mentioned elsewhere on the forum, would also be nice.