Middle-clicking Panel Buttons Travel Focus

Hi.

I was thinking about these buttons and it occurred me that it would be very logical if middle-clicking a panel view button would focus the view in question even when keyboard focus is locked. Middle button is after all used for keyboard focus switching anyway. Especially I would like this because of automation and instrument envelopes, I often middle-click them and misclick just so that something annoying happens. Also could save me a click or two every now and then.