I'm getting better battery life than iOS4. The faster performance of it probably let's the CPU sleep more often and more quickly.
and it's something drastic like -10% every hour while asleep
Why wouldn't you have your phone charging while you sleep?!?
it should not turn my iPhone 4 into a Galaxy Trashcan or HTC Battery Gulper 4G. The iPhone 4 was a huge improvement in battery life over my old 3GS, and I don't want to go back to the 3GS days of a full charge not making it through the day
Welp, hasn't happened for me on my work provided 3GS, iPhone 4, or three day old iPhone 4S. You might be reading more into problems that certain phones are having. It's far from widespread.
I just want to hear both Apple and users say "this iOS update really fixes the battery issues for everyone" before upgrading.
Meh - even if I were experiencing battery issues, I'd rather have iOS5 and the new Mophie JuicePack Air than live without the improvements of iOS5 - chief of them being wifi sync. Which happens automatically every night when I plug my phone in for the night