I think you're right here, it doesn't look like anyone has gotten around to adding it yet, or it may have been an oversight.
I'm mostly just familiar with MAL and bakaupdates, but the way those two sites would track this would be to have a unique entry since it's different enough from the original show.
That's good to hear that you find it refreshing! I haven't watched the movies either, but Madoka has always been one of my favorite series.
That's really cool that the broadcast comes with Kano Eiko's commentary as well, and the fact that he's coming in fresh to the series‽ That sounds hilarious lol