Forgive me if this has already been mentioned, as I have not kept up to date with this forum. It occurred to me as I read my umpteenth buffer issue that it would be convenient to have a button in the control bar to shift buffers instead of having to go into preferences each time (yet still defined in preferences). I can already see this causing grief to some interfaces, and probably the transport scripted to stop, audio engine off and back on, etc.; but is an idea.
I guess the real "desire" here is not to have to drill into the preferences to do this.