Any tricks to quickly changing between guides?

I'm using a Harmony remote, and running Channels on my Shield. I have guides set up for normal watching, another for sports, and a third for PPV, but to get between them I have to go to the guide, move left to the channels and scroll all the way up - which can be a little or a lot depending upon where I am in the channel list.

Is there some faster shortcut that can be created to have a single button press go to the guides switcher at the upper left of the EPG?

There is not.

Got it. Is this something I can feature request here or via Github somewhere? I'd think it would be useful to lots of people, actually. I could possibly look to code it, though my skills are super basic.