Basically agree with OP, but really, LIVE albums are a different animal. They most always have SEVERAL albums of material to pull from when performing live, thus making it much easier to stay strong over a Double album.
Also, live tracks are very often MUCH longer, so a SINGLE live album might have only, say, 4 eight or ten minute cuts, so a Double Live seems to make sense, to include more tracks. An album with only four or five cuts could be a tougher sell, so what do you do? Add another LP. (Think
like record label)
So.......
Best LIVE Double Albums
Led Zeppelin - How the West Was Won (OK....actually a triple album)
Pink Floyd - Delicate Sound of Thunder
Deep Purple - Made in Japan
Hawkwind - Space Ritual
The Allman Brothers - Live at the Fillmore East
Neil Young and Crazy Horse - Live Rust
Yes - Yessongs (OK....actually a triple album..again)
Wishbone Ash - Live Dates
Thin Lizzy - Live and Dangerous
Traffic - On the Road
Rush - All the World's a Stage and Exit Stage Left
Humble Pie - Performance: Rockin' the Fillmore
Be Bop Deluxe - Live in the Air Age
UFO - Strangers in the Night
Jean Michel Jarre - Concerts in China
Crosby, Stills, Nash, & Young - 4 Way Street
Tom Petty & Heartbreakers - Pack Up the Plantation:Live
Neil Young & Crazy Horse - Weld
Peter Frampton - Comes Alive
Peter Gabriel - Secret World Live
Best STUDIO Double Albums
Genesis - The Lamb Lies Down On Broadway
The Beatles - White Album
The Who - Quadrophenia
Jimi Hendrix Experience - Electric LadyLand
Pink Floyd - The Wall
The Clash - London Calling
The Who - Tommy
Amon Duul II - Tanz der Lemminge
Amon Duul II - Yeti
Mike Oldfield - Incantations
Omissions (for me, at least)
Led Zeppelin - Physical Graffitti..should have been a single LP, way too much filler for Led Zep.
I love this band....I do NOT love this bloated album.
Pull off the best 40 minutes and it could have been sweet.
Bob Dylan - Blonde on Blonde ....good stuff, not my cup of tea, tho.
'nuff said.....