You would think that the battery life issue (if it is true) would have been caught earlier on in testing... unless a recent software/firmware change caused it to degrade much more quickly than before. Unless that change was a heavy duty requirement (or too tightly intertwined with other changes), you would think it could be backed out and resolved after the fact and then pushed via a post-release OTA fix.
I would love to see what the user acceptance test requirements are for battery life on the phone (or any phone). The talk time/standby time stats phones usually come out with are bogus since that metric is essentially the same one that was used 10 years ago - nobody uses a smartphone JUST for talk and standby. There should be new metrics for battery life like; low use, moderate use, heavy use... and define them consistently across manufacturers.
I imagine the battery drain is not from LTE, but rather from the radio searching for an LTE connection.
This is my theory as well... I think the new firmware rumored to be coming will cut off LTE after X amount of time without an LTE signal. The same happens to your battery if you are in a low signal area on 3G.
In other news, my local VZW told me that the HTC rep was in last night and they are now shooting for mid-March. I picked up an Inspire to check out the new Sense. If the TB comes within 30, I'm good. Otherwise I guess I'll either stay with ATT or see if the Inc2 has dropped.