Great question. Caren's got some insights I think you'll like:
http://www.guitartricks.com/lesson.php?input=19335&s_id=1490
Similar teaching here on more advanced chords:
Independence
http://www.guitartricks.com/lesson.php?input=18609&s_id=1428
http://www.guitartricks.com/lesson.php?input=18610&s_id=1428
http://www.guitartricks.com/lesson.php?input=18611&s_id=1428
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