I use iMac 14,2 SMBIOS.
I personally can live without Pendrives plugged in when system goes to sleep.
I rarely use one of two frontal usb port from my case and those in the back of the motherboard.
I have latest EFI modules into the bios updated using UBU Tool.
I use IntelMausiEthernet.kext
WOL works perfectly with Ozmosis and I will leave as it is, because i really need it.
Two things are the most important for me:
-USB Ports, which works native one in the front case and the rest on the motherboard's back
-System sound after wake from sleep (If it possible fixed by DSDT)
I removed CodecCommander.kext and looks like the system sound works well after sleep but soometimes sound is popping and dissapears. Theoretically it can be fixed with AntiPop.app or by changing system definition with MacPro but it's annoying because I want to use iMac SMBIOS for powermanagement purposes.