This sounds like one of those CrackBerry stories of people claiming to get 24 hours out of their Z10 when in reality you could get like 8 at the very best lol
I does a lot of test with my old 920 that have a poor battery life time (well, i succeed to drains the full 100% in an hour) and:
If you have a good network, having 4G always on drain your battery depending on your data use.
If you have stop all app that use location in background, same here, having location ON isn't significant.
Bluetoth 4.0 doesn't use a lot of battery, even using it.
Brightness drains depend of the use, and it's a big drain.
NFC also drain a lot of battery.
Definition of "use" d?pends of the user. Playing hight rendered online game is different than working on an excell sheet.
What I can say for sure, if you use a lot your phone, and don't have heavy background task like here drive and "check for new mails" set ON, then your screen and the apps you use (games, IE, camera, image processing) will drains your battery so fast that activating or not Location and BT will not be noticeable. As for wi-fi, just save your own wi-fi and deactivate the automatic research of new wi-fi spot and it's ok to have it ON all the time, since WI-FI, Location and BT will together drain something like 2%/hour while IE for exemple drain something like 15%/hour, and an online game will do a beautifull 25-60%/hour battery drain depending of your network quality.
For me the list of what drain the battery a lot:
1. Background tasks that use location or network (Here drive, mails synchronisation...) - Can be adjusted to almost no drain
2. Network use and quality - Can be adjusted to a minimum depending of your network (set to 3G)
3. Heavy process like high rendered game and image processing - Can NOT be adjusted without preventing you to use the phone as you want
4. Screen! - Can NOT be adjusted without preventing you to use the phone as you want
Since point 3 and 4 can't be reduced, and drain a lot if you use your phone, setting OFF location (which is not used since the background apps that use it are not allowed to work), WI-FI (that does not look for new spots since you have set it correctly) and BT (that have a low drain since the 4.0 version) will just limit your phone experience to gain something that is insignifiant regarding to your daily use. Even with my old 920 I never switched thos 3 settings OFF since I have never seen any significant gain.
Just my point of view and my experience regarding this battery issue.