I watched this too, and remember watching it not long after it came out in 1986. Despite being a massive EC fan, I have to agree with you about his appearance on this - his playing and sound didn’t suit the material much at all. Coupled with the fact that the late great Mickey Gee was at the back doing some very tasty stuff on his Telecaster, and Dave Edmunds and George Harrison both played more appropriate solos too. Eric has done a few things where his style didn’t really fit in - when I saw him with Hawkwind last year he just did his trademark EC thing with them too! Incidentally, did you notice on the Carl Perkins gig there was both an electric bass player (his son) and Lee Rocker playing upright pretty much on every song- unusual!
Regarding other players, I remember EC and Jeff Beck playing at a charity gig, The Secret Policeman’s Ball many years ago. They performed ‘Further on up the road’, a blues standard. The drummer was Simon Philips, who apparently is a brilliant jazz/rock player, but proceeded to decimate a simple blues shuffle with loads of clever fills etc. I’ll see if I can find a clip and post later.