Just dirty flashed Wanamlite v3.0(L5.1.1) + L5.1.1 latest BL - and install L5 exposed by wanam + wanam xposed = Wow!!
This is what i call N4 L5.1.1 - memang gooding - Ram usage is better despite many apps open (now only below 1.8GB ,b4 was 2.xxGB)
Recent apps button instantly displayed.
Finger print still intact after flashing - no need to go to private mode to re-setup finger print.
No heating issue.
I can't detect any flaw at the moment - maybe the developer can detect it in the next update if any.
Oh!yes 1 more thing - it's rooted 

Read my post above, i am currently using sixperience

didn't use since still buggy

ya just depends you can accept those bug or not

but I no idea why they don't want use back note 4 camera
for me note 4 camera is more than enough