I take your point Jazzbo. I recentlly played the ladies and gentlemen-the Grateful Dead live at theFillmore East 1971 set released on Arista shortly after Hart left the band and Billy is magnificent.
I do not like planet drum et al but do hold in enormous regard the`Rolling Thunder album, possibly because so many of my other faves of the time were on it, Melton, Cippolina and so on. And I guess Hart was such an integral part of Anthem , Aoxomoxoa and Live Dead, to this day my favourite Dead period.
Anyway alone together they participated in some pretty amazing music!