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Hello James,
thanks for the encouraging feedback! :-)
I do fear, though, that the feature you request is too specific as it
is. The menu button, when held in the menu, already has a function
assigned to it and the number of available buttons on the Apple
Remote is too low to justify the sacrifice of more than one
possibility to invoking the menu.
However, I also have to offer a solution to you:
If you switch between your screens a lot, consider configuring your
own custom menu. To do that, go to the Preferences, choose the "Menu"
tab, select "James's profile" instead of the "default profile" and
then drag the respective screen actions from the left to a position
of your liking into the menu. If you use it often, this could f.ex.
be the top level. Since, inside the menu, a long press on left will
bring you to the main level, you can then access this functionality
very quickly in the menu, no matter where in the menu you currently are.
Hope that helps.
Best regards,
Felix