would like to thank you again MaLd0n, I finally managed to have a sleeping/waking hack again with your DSDT and a few hardware adjustment (basically, memory settings).
I will stay on Sierra for the moment, as High Sierra is ok for sleeping but never wakes my hack
Plus, Sierra's HFS+ is as fast as High sierra's APFS and the ethernet stack is far smoother ...
I kicked out some unused devices (Asus AI things ...) and I'm trying to find the unused Method on it.
I modified the names to match Apple's ones and I added a working FWR device (cosmetic).
Here it is for those who have the same old MB.