There are a few things I would like fixed but I wont even mention them because battery life is so horrible! I just want them to fix the battery issue with the iPhone 5, even if it's the only thing they fix in the next update.
My iPhone 5 is presently sitting at 44% 6hrs 4 mins usage and 1day 8 hours Standby.
I have an iCloud account and 2 exchange accounts setup on it and a variety of apps. I think that the battery life is perfectly adequate.
Bugs: hopefully they will fix the Exchange calendar bugs.