It’s worth exploring opening out the chords, and using inversions, too.
Rather than playing 3-5 notes of your chords roughly a 3rd-4th apart, spread them out. Play the root note, the 5th, the (minor)3rd, and the 7th (or 9th). Having the 3rd or 5th of the chord as the lowest note played (forcing one of the others to be the highest) does nice things to the perception of the harmony.
(Those of you with better music theory than me probably find this description too simplistic. Sorry!)
Another great tool for interesting tone is to split the chords between two sounds, or different wave shapes per note (when you have mutliple oscilators).