This thread presupposes that there is a battery problem based on speculation. That speculation may prove to be true and if so many people will refer to this thread for guidance. I'd like to discuss a few points in it, hopefully we can all benefit from some adjustments after we talk them through. Hopefully, we'll never need to refer to this thread, even in a 4g area.
1b. I haven't found an app yet that leaves the GPS radio on when not needed. When one does, the one star ratings pummel it into oblivion. The GPS is only consuming power when its icon is blinking or solid in the notification bar.
1d. Isn't this best left to the phone? It is able to detect when 4g is available, but it must have some criteria for signal strength that is acceptable to use. If you're 5 miles from a 4g upgraded tower and 0.2 miles from a 3g tower that has not been upgraded yet, some threshold of power required to maintain the 4g connection should fail over to the close 3g tower. We won't know for sure on this one until the TB is released and we have real information.
2. For how short a time wallpaper is displayed, is this significant enough to recommend foregoing a distinctive feature? I'd really rather not spread an expectation that you have to shut off basic features like this, even if there is a battery issue with the TB. I'm assuming we all understand that the wallpaper animation goes idle when the screen is off and when another app is being used.
5. An LED? Seems like feature benefit exceeds power used even if the TB has a battery issue.
7. Idle processes consume no power. Idle services may, and should be tweaked by the owning application to meet the user's needs. Devs will typically set default times for their services to wake up and do things that are designed to create an ideal user experience. If an app's service is taking up too much juice and you can't configure it down to something acceptable, find something else.
8, 10, 11. Always on data is why we buy smartphones. If people need to manually update data providers to save battery, this phone is going to fail. We fill our screens with data-driven widgets because we can and because we prefer that to the icon only implementation of Springboard. The prospect of 7 dumb home screens sounds like an iPhone. The comments here about setting intervals slower when you can are the best part of these items.
9. I thought we already had wifi off in 1g? Do we know for sure that there will be notifications for 4g? There isn't one for 1xRTT versus EV-DO, other than the icon change.
Most of the rest sounds great, maybe 27 and 28 need an if really necessary disclaimer, but I didn't want my post to sound too negative. OP, I'm not trying to spar with you, I'm on your side, you've made a nice post and it makes me comment. If you don't like or agree with what I said, no biggie.