A couple of observations:
-
The Beatles’ family was big - there were a lot of people in it and riding on its coattails and engaged as they gained momentum.
-
I found The Beatles by Spitz to provide a lot of insight and details to how different key players contributed - from Best (and his mom - Best got the gig because his mom ran a club the Beatles wanted to play in) to Murray the K.
-
I think George Martin brought studio craft, music production craft and songcraft to the Beatles. All critical, but he was not part of the Family the way Epstein was. I tend to give Lennon and McCartney most of the credit for the creativity that marks their work - doing the string arrangements or a harpsichord fill or requiring tight intros and endings all contribute to the polish that marks their tracks. But to my knowledge it was Paul who insisted on boosting the bass in the mix (Emerick describes how they did in his book) - which, to me, is one of the key sound shifts that mark the Beatles’ sound as fresh to this day and was pretty innovative in the early 60’s…
-
Brian Epstein was central to the Beatles family. He yearned and pained and strove on their behalf - getting them the demo that introduced them to George Martin after so many rejections, etc. You could argue that the Beatles’ deteriorating relationships and breakup was inevitable given the huge burden of fame they faced and the drugs, but Epstein’s death and the attempts to fill his role was the clear precipitator of much of the squabbling that led to the end. Granted, he wasn’t the best businessman himself, so even if there weren’t drugs and trouble, it is unclear how long he could’ve kept “The Beatles” going, but his death clearly was a turning point. And let’s not get started about his crush on John and how he put John and Cyn up - he was involved in the boys’ lives in a way that Martin never was. Mal and Neil are clearly part of the family, too, but were less directly responsible for The Beatles’ fame vs. Epstein…
Gotta go with Epstein.