Not forgetting she managed to recruit arguably one of the world's best bass players
for the albums Hejira, Don Jans Reckless Daughter and Mingus, namely Jaco Pastorius
https://en.wikipedia.org/wiki/Jaco_Pastorius
Joni is a visual artist as well as sound artist. For instance who has spotted that it
is her dressed as a man, also on the front cover of Don Juan's Reckless Daughter ?
As for sound, her guitar playing is totally unique and well worthwhile hearing just for that
aspect.
As for sound quality, I agree where she had control over what was being recorded,
there is consistently good quality. For instance compare, Shine to Don Juans's
Reckless Daughter, despite 30 years between them.