Day 4 I hard reset the phone yesterday, I loaded up a backup but didn't let the store to automatically update. I updated every Microsoft application (news, travel, sports, finance), and even other popular ones (4th & mayor, reader, ebay, HERE, kick, linkedin, nextgen reader, etc). I left Facebook BETA and all the system apps without updates.
Yes my phone became scolding hot (as it should) so I actually put it on top of a few rags and under them was an ice pack (wanna prolong my battery life here). Anyways, the important news. Phone stayed cool after I launched all apps and kept it on the ice pack for a few hrs. Battery status. 85% remaining. Time since last charge 3hrs. Time remaining 1day and 8hours. Now we're talking!
This is with how I think settings should be (Bluetooth on, as items arrive, NFC off, Wifi/data on when needed, sync and backup all information on). All that's left is to enable motion data.
I just installed Facebook BETA, will see how that syncs and plays with the battery. Tomorrow I update the system tools one by one each hour. Either motion data, or battery saver are the killer here. Or, all that was needed was a hard reset? (I hope)