I'm not following you. What choices do we need to make?
I have my phone set the SAME way that you and erasat do - WiFi calling off, VoLTE off, nearly all Google services (other than email) off, Location Services off, NFC off, WiFi scanning off, WiFi smart scan off, brightness at 30%, all pre-loaded unused apps off, etc. This thing is 80% shut down. I've done 2 Factory Resets (clean, no restore from a prior save) and many, many cache wipe-outs.
My issues first were Cell Standby, then Google Play Services, then Android System and now back to Cell Standby. Just when I think an issue is gone, another one pops up.
There is nothing more I can do other than throw the towel in, which I'm not willing to do yet. This phone is PERFECT other than the legitimate battery life issues. I haven't experienced battery management issues like this since my early days of Android. In the past month (nearly) of my ownership, I've seen Samsung push an update out and then Google Play Services so I'm hoping that there will be a fix for the issues so many people are experiencing. And, I agree that the core of this is Lollipop and it's affecting many Android devices but that doesn't help me or all the others with frustrating battery life.
But, I know this will frustrate you, I'm not willing to sit back and wait quietly for a fix. It's been a month. I spent over $1,000.00 on this phone and have a lot of time and money invested in it (I bought it outright) and I have expectations it will work properly. It doesn't even have to work as well as yours - I'd be thrilled with 4 hours SoT...but I'm half of that right now and am at the mercy of some update that we all hope Google makes to the phone at some undetermined point.