Would be nice to have the ability to jump by number or name to any channel in the guide. Suggest putting a mini-search option above the channel filter. When you click in, you can search by number or text and pull up channels, and a click will drop you in that channel.
Doesn't need to break anyone's flow, you can still default it to the same item in the filter list when someone navigates in from the right. Just make use of the space above the top of the list.
The Siri mic works really well. If I can slide over and speak a number or channel name, would be a great way to get there.