If you look up any of our posted schedules under our blog you can access the dlive schedule google calendar. You can then add individual streams that are on the schedule to your personal calendar.
I know this isn't ideal but you can also follow (from the dlive site.. Not just steemit!) and will have your subscribed feed.
I know that is not exactly what you are looking for and is just a work-around but, If I had to guess, I would imagine your suggestion is already in the works.