If you havent heard - Channel's Jon Maddox featured on the Home Gadget Geeks Podcast Episode 510 - highly recommended to Channels users and Enthusiasts - Jon did a Great Job highlighting the present and the future of Channels
One of the topics he brought up was focusing on live sports - and asked for some feedback on what would live sports users want to see in future updates.
Frankly - OTA Live Sports is the reason I use channels - The most critical feature I look for is "Live Timeshifting" - the ability to watch a recording in process and then transport the recording seamlessly. I often catch a football game sometime in the 2nd quarter and then can catch up. Unlike its competitors, Channels works flawlessly.
another nice feature - the ability to set a "team pass" search for your favorite team and Channels will set up a pass to record all games for your team - neat. cuts across all the Networks
Please dont go down the plex route and add a bunch of crappy features and ignore your core functionality.
The only thing I would add is dual channel Picture in Picture - This is a feature that my old "Comcast" cable had 15 years ago or so - I would catch a couple of games at the same time every now and then - One year, I was able to watch both the world series and my Team's Football game at the same time.