I need to do it blow-by-blow as well
Artwork: Helpful, yeah. A cool album cover leaves a lasting impression, and helps to hold in your sweaty palms in dumbstruck awe as you listen to ManOwaR
if it's crap you just don't pay attention to it. So I guess art's a safe point. Can't take away from the music, but if done right can add something to remember it by. And, let's face it, when we were kids we were all very impressed by Metal album covers, ne?
Track order: Doesn't seem important to me. It's only after you listen to the music that songs become memorable for their order for whatever reason, but I can't really think of an album that would have suffered if the tracklist got jiggered around before anyone heard it. I mean, with hindsight,
Powerslave beginning with Rime Of The Ancient Mariner sounds daft, ne? But then you think, Maiden did this with Sign Of The Cross on
The X Factor. We see where it leads?
Length: Long albums only a problem if the material is too plodding and dull with nothing to say. See Opeth.
Imagine: This is gonna contrast quite oddly with what Jay said, but I must admit I am a total sucker for those cliche 80s images. Bullet belts, skin tight jeans, middle-partings a la Iron Maiden/Tygers Of Pang Tang are very sexy
but not as sexy as spandex & hair spray of Hair bands. What's left? Those photos from the first three Slayer albums! They're not sexy, but they make the music, to quote Strong Bad, "a whole lot cooler, like robot boots!"
Label: Don't give a shit
Fanbase: Not important with personal exceptions. Sometimes I've thought about Slipknot, who I used to be a really big fan of, and I've thought 'is it likely I'll go back to liking them'? Apart from the main 'no because I'm not interested', the other discouraging factor was imagining legions of 14-year old kids and thinking 'and be part of THAT crowd'? Same with Metallica. I suppose it's a case of helping drive you away from bands you are indifferent to, but that's just me and I can imagine there would be some uber-mature metalheads who would clout me for this (the same who clout you for saying "Death To False Metal!" - what was ever wrong with that anyway?!)
At the end of the day, these are little niceties that add to the pleasure of listening to music. I really do like a nice fat glossy booklet to flick through and accidentally put greasy thumbprints on when I'm on my first listen. I have a copy of Deep Purple's first album that I bought in America where the sleeve is just a slip of paper for the album cover...the music speaks for itself but I like little sparkly lights and zip-a-tone to go with it!