I personally don't have the attention span for a double album. I'm not ashamed to admit that I would find single album versions of White Album, Physical Graffiti, Tommy, and the Wall more appealing.
Sadly, as i get older, i find my attention span is going, too. I used to sit glued to the record player, as Bob spewed out all 120 verses of Desolation Row, Hurricane, or Lily, Rosemary and the Jack of Hearts. Now my mind starts to wander after 2 minutes and 30 seconds.
Keep it short and sweet. Straight to the point.
Maybe that's why i am going back to more 50's/mid 60's music these days. If your single ran over 3 minutes, it was less likely to get played.
Unless it was Like a Rolling Stone or Hey Jude.