Surrender is a pretty good bass part. And where the streets have no names is certainly not flashy, but does it drive the song? Hell yeah. So i'd call it an efficient bass part. I always like twilight myself, as a song and for the bassline.
I'm not sure why this thread was necroed but i'm gonna carry on with it and say my piece even if people have long resolved this argument because I have found myself defending Clayton in the past.
I was a huge U2 fan in my teens, i haven't liked anything they did since 1993 (and really their last good one is Achtung Baby) but naturally when i started playing bass in my late teens, well, there was a lot of U2 basslines involved in my learning (actually good basslines to learn to). There is no doubt there isn't much anything fancy in his playing but he's always been solid and certainly a worthwhile addition to the band. And on the early stuff he was rarely a root player. You can't be a root player when you've got edge on guitar, the guitar in older U2 is usually not following the bass AT ALL. The bass melody was usually independent of the guitar. I think probably my favorite bassline of the early days would be Two hearts beat as one (
https://www.youtube.com/watch?v=uIuAFBRyjj4 you got slides, a tiny bit of slap and a great tone). Gloria was the first bass solo AND slapping i ever did. It's very easy, but sounds good. The guy even did some harmonics on some early stuff. Live, as evidenced on under a blood red sky, he liked to throw in chords once in a while. Now i realise harmonics are a simple enough thing but name me one boring root playing rock bass player that ever thought of using harmonics... a root note guy wouldn't even dream of doing an harmonic....they probably don't even know what that is.
A few things to bring up way too late because its a necro but.... I read someone mentioning if anyone of us here had ever written such an iconic bassline as new year's day. No, but fun fact, while new year's day is a great bass line, Clayton came up with it while trying to figure out what the chords to Visage's Fade to Grey were.
Someone at some point was commenting on the Pride solo and how Clayton was playing in a different key than the guitar and then came the issue that maybe edge should have played something different and someone doubting that the bass came first....Actually.... I can tell you for a fact that in early U2, 90% of the songs started with the rhythm section. Just listen to Edge's parts and play them. That kind of textures, you wouldn't come up with half that stuff if you didn't have a rhythm part to play over. I fact, the whole reason Edge wrote Sunday bloody sunday is because he was in a rut and doubting himself as a composer because he felt all he'd been until then was the guitar player, just the guy that laid the (amazing) guitar tracks over the rhythm section. Most early U2, if you play the guitar alone, most people won't recognize the song and certainly it wont actually sound like you're playing a song... So all this to say, i'm pretty sure Edge came up with the pride solo AFTER the bassline was written.
In a similar vein, Bullet the blue sky. Bass and guitar play in a different key. This time though apparently it was Clayton's doing. Edge thought Clayton wasnt udnerstanding what he was trying to do...and maybe he didn't...but in the end it became a great and classic song. My point? Maybe sometimes knowing what key you should be playing is what you shouldn't be doing...
Clayton used to actually be pretty insecure about his playing and in the early 90's he actually took lessons to try to break out of his bass playing habits. While i don't like the record, this becomes a bit evident on some of the Pop basslines. And also on Zooropa (Some days are better than others, Stay). Listen to Last night on earth on pop. Achtung baby has ok basslines (though a bit more typical, by then he'd lost the post-punk bassist thing) but they are too buried in the mix and sound flat. A shame.
All this to say, i've seen other very popular bands with far worse bassists. You have to understand U2 came out of punk and post punk. The approach there was NEVER musicianship and certainly they all valued friendship over anything else, if even Adam had ever left the band (or did now), the band would be over. U2 is these four guys and has always been. Remove one, and it's not U2. So yeah Edge is a great player, but he's a sound technician more than a technical guy (and has a mind that as also a guitarist, i can't fathom, like...WHY WOULD YOU THINK OF PLAYING THAT? I dont know, but i wish i understood it...i'm thinking the older stuff here)
Also, as a person, without Clayton it's likely U2 wouldn't have broken through. He was the first one to believe in the band and the dream, the first one to commit himself entirely to the band. He was basically the manager before they had one. The other guys have said it, without him, they probably wouldn't have ever been known outside the Dublin bar circuit. Oh and also, he actually was always the coolest member and the most laid back... Also the "wildest". By u2's tame standards this isnt much, but hes the one that dated a supermodel and who got busted for carrying pot at customs and hit a policeman while driving drunk...