The importance of Billy is not to be overlooked. He could swing and did. His cymbal work was a driving force. Mickey turned cowbell into a valid musical statement. The new guy in Furthur is monstrously good in the modern sense, but he doesn't fit the tunes.
Keith's piano helped make Europe72 the classic of all classics.
Brent's B3 and voice propelled the band during some its most driven years.
Even Jerry wasn't Jerry over the years. Listening to Bobby, when Healy hadn't buried him in the mix, learn slide onstage was memorable. Pig was delightful whether or not he was singing flat.
Phil seemed to be the most consistent. I loved watching bombs on his oscilloscope .
Harry Popick? Let's no forget his contributions.