I came from a pretty crappy phone that would last literally all week and then some on just a 900-1000mAh battery, and I have to say that coming from that to owning a TB was a huge difference.
Out of the box I was getting ridiculous battery drainage due to the very unrealistic factory settings provided with the phone. In one day I would have to charge three times. Upon reading into it, and for owning it for about 3 months now, I can easily get about 2-2.5 full days of use on moderate usage (texts, angry birds, browser, voice).
Really all you have to do is just fiddle with it yourself. Many thanks to the OP for compiling this list and updating it, it has great information and I learned a lot from reading this thread as I got to know my TB personally. But ultimately, I think if you stop getting scared of battery drain levels that are not acceptable to you, then you will find that even though the battery will always be draining and even at a rate that is unreasonable, then it will be easier to go about working on what
works best for you and your needs. No two phones (TB's) are alike, and the same applies to their users. Some will need more data to be used than others, and some want eye-candy, productive widgets, and apps running to help them stay in touch. That's fine, but don't hold the TB to one standard for all uses.
I don't know who said it but earlier on in this thread someone said that they maintain that the battery life would be a lot better if people stopped fussing about it so much and just used it. I would agree with this with the addendum that continually referring to the OP would be very helpful, as he updates it as things are discovered and changed.
As byrong says over on xda,
"the best advice I can offer is to stop paying such close attention to your battery gauge and to just use your phone. Charge it whenever you can, and then stop obsessing over the exact numbers. If you really need more usage time, buy an extended-capacity battery and use it normally."
EDIT: In fact, I would HIGLY recommend you all read that post, as it may be pretty enlightening to some here.
http://forum.xda-developers.com/showthread.php?t=871051