I follow a similar format and prefer modules like mixers and sequencers and controllers on easy access lower row as I make changes on the fly more often than set and forget things like an oscillator in the top row. Some modulation sources like my new Acid Rain Maestro are on lower level next to sequencers and mixers as the Maestro is like a cross between a clock, hex lfo and sequencer that begs to be played live with frequent changes. Such a fun module!