Thanks for these.

What I find interesting is chords that bring out the quality of the modes. It's often hard to know what to leave out in a modal chord.

One method seems to be include the root and the main leading tones (m2nds)of the mode and also the b5 interval that lies on the Lydian tonic.

Deciding which is the main leading tone to include isn't always easy. In some cases it comes down again to whatever amounts to the Lydian leading tone 7th. In others like the Mixolydian mode, the 3rd to 4th leading tone also seems significant.

If in doubt include them both and just be thankful you're not having to come up with definitive voicings for scales like the diminished augmented mode!!

that would gives the following voicings, (bracketed tones are optional)

Major : 1, maj3, 4, maj7
Dorian: 1 2 m3 6 b7
Phrygian: 1 b2 (m3) 5 #5 b7
Lydian: 1 maj3 b5 maj7
Mixolydian: 1 maj3 4 (6) b7
Aeolian: 1 (2) b3 5 #5 (b7)
Locrian: 1 b2 (b3) 4 b5 (b7)

Not everyone will agree and there seems to be no sure fire method other than to find a voicing that clearly distinguishes one mode from another.

Regards

Alan