For me, personally, I was always touched by the sound of the human voice that emanated from his playing, on all instruments. Ornette imbued every note with the cry of humanity; the voice of real people having real feelings was always tantamount in his sound.
It's also great that he got monetarily rich doing it! I tip my cap to the astuteness of his business, not an easy endeavor within the music business.
Disaster Amnesiac loves so many of the bands and musicians that learned from him: Anthony Braxton, James Blood Ulmer, Grateful Dead, Arthur Blythe, David Boyce, Rent Romus, Joe Baiza.....on and on and on. Surely his Harmelodic Theory will continue to bear fine musical fruits from diverse quarters.
Ornette, you have now left the Planet Earth, may your spirit fly far and wide into the Greater Omniverse! Godspeed, Ornette, and thanks for sharing your vibes with the rest of us humans!