EQ toggle on playback screens.

[the_bertrum]

It would be very handy to have the ability to have a button on the playback screen/playbar that would toggle on or off an equalisation setting.  For example, I switch between listening on headphones and speakers a few times a day and my EQ setup for headphones is very different to that I want through my speakers.  At the moment I have to remember to go into the Audio Configuration screen and switch off the crossfeed, or the parametric EQ or what have you.  If the Audio Configuration screens had a method to mark a setting for use on the toggle, the toggle could then switch the config in question in or out right from the playback screens.
Is this possible?  Would anyone else find it useful?