Currently in the guide there are some predefined categories, All, HD Channels, SD Channels, Movies, Sports, etc... Some are useful, for example "Favorites", or "Movies". Others not so much. My family watches a wide variety of programming, not all of it curated to the DVR.
Currently there is no way to sub-categories groups of live streams. For example, all channels that have something to do with 'animals', or 'Science' or in the case of my spouse 'Crime Dramas'.
PlutoTV for example has many channels dedicated to specific subject content but those listings always end up 'below the fold'.
Like Collections for recorded/curated content, how about allowing users to manage groupings of live channels from the server/admin side? Just like 'Favorites' but user named? Then allow those sub-categories to appear in the guide alongside of or in replacement of "kids" or "news" etc...?
I mean how many times has there been bad weather, but your local OTA news hasn't started yet? So you get into the guide, then page down... maybe down some more... then remember you need to sort by 'All Channels', then page down....
Now compare that to an experience where there is a 'weather' sub-category of live streams. Pull up the guide, select 'weather' and boom. Specific streams regarding weather. Or in my spouse's case 'crime dramas'.