The Sex Pistols actually did have Sid in the band when they made Never Mind the Bollocks but he was too incompetant to play on it so they brought back Glen to be a session guy and Steve Jones also plays some of the bass. According to the Never Mind the Bollocks classic albums dvd, Bodies is the only track Sid is on and they put him low in the mix.
I agree about the Greatful Dead and Phish. I think Jefferson Airplane were better, they usually knew when to end a song or a jam, had a very underrated guitar player in Jorma Kaukoen, and thanks to Grace Slick and Marty Balin far more powerful vocals. On their Long John Silver album from '72 they do a really good hard rock song, Eat Starch Mom that almost reaches Stooges and MC5 level intensity and another track, Easter? bashes the Catholic church. You won't find anything like that on a Greatful Dead album.
I also prefer the Allman Bros over the Dead and Government Mule over Phish. Phish are an overhyped cover band and their original material is nothing to be proud of.
I've tried to get into the Clash but it just never makes it for me. I like some of their singles but all their albums seem bloated and overwrought to me and I think they were out of their depth when they tried reggae stuff.
I would say:
Oasis, I don't get why the UK worship this band so much,
Coldplay, they're like Take That blended with Radiohead, I could see how that would sell alot of albums but that doesn't make it good, if I want to hear Radiohead I'll just listen to the real deal,
Nickleback, they make me ashamed to be Canadian. They represent everything wrong with mainstream rock to me,
and
U2, they've been milking the same guitar tricks and song structures forever. AC/DC are formulaic too but they make up for that with Angus and Malcom being such excellent guitar players.