I think Black Z and I are alone on this battery boat, because my phone sinks overnight when I'm not even using it....in Battery Saver Mode! My old iPhone 4 would last a few days between charges. I'm lucky if I can get my Lumia 1020 to last 24 hours.
I would love to have a Lumia 1020 "S" model, but I can only imagine that it would be difficult to sell. Apple gets away with it because they are Apple, but I fear that most people will just see the new phone as "just a 1020 with some changes." Personally, I love my 1020, and the only thing I don't like about it is the battery. If I could get an "S" model with a better battery and upgraded processor, heck, I don't see any need for a new phone for a while. By the time I do, the new Lumia flagship should be ready. Sign me up!