I used to have a Mackie analog mixer, but I've switched over to using a midi controller (Launch Control XL), and I'm not limited by the 5 bands that existed on the Mackie (low cut, 80, 250, 800, 2500, 8000).
I'm using the EQ for playback, so that I can "play" the notes as they come; rumble, punch, mud, piano/harp chords, claps, and rides etc.
I ported these frequencies over because I thought they might've designed to hit different keys equally. In Ableton, I turned all knobs and changed the Q so that I got a relatively flat line between peaks.
I'm curious if anyone has suggestions for a 7 band EQ. Maybe 7 bands is too much, and I should focus on other audio transformations. Ultimately, I'd like to DJ and mix streams efficiently.