You can program the blue button to cycle through your favourite channels, I have ours set to cycle through the main FTA HD channels. No reason you couldn't do the same with the SD versions.
This idea has merit, although I would have to make all the channels favorites and list them in the same order as the ones on the 'All channels' tab.
BTW- I would produce a list of the things that Tony doesn't like, but the letters on my keyboard are growing faint as it is.