I love my Lumia 920. My battery life is NOT an issue, and I wonder if those folks who have battery problems are not suffering from application battery issues rather than anything specific with the OS.
I don't let every app have live tiles, and I have been prudent about installing a bunch of apps, just because they catch my eye. I've already installed apps and then deleted them when I found I rarely, if ever, looked at them.
Let's face it, folks...It can be just as easy to load up your phone with marginally-useful, resource-hogging apps as it is to load up your desktop PC with the same kind of dreck.
We should be sure we're trying to solve the right problem, and not jumping to the wrong conclusions about the cause for some of the issues discussed. The fact that some of us are having great experiences on our phones, while others are having lots of problems with exactly the same device should be a warning sign for all of us. Let's track down the real culprits.