Instead of scrolling to Prime-Time in the Live TV Guide display, it would be nice to just hit a "Prime-Button".This would be different from the "Prime Time" display, in that it would be the "Live TV" display, but just starting at 8:00pm.
That could be neat...
One other way to scroll across the Live TV grid quickly is to use the FFWD/REW buttons.
It's not quite instant, but it's pretty speedy.
I mostly interface with my TabloTV with Chrome on either Phone, Tablet, or Laptop. I'm guessing the "FFWD/REW buttons" that you refer to are on the Roku ???
Perhaps we can look at adding some keyboard shortcuts to the web app.