Just try it @Slice - for me it loaded without any problems, but if I loaded AMDRadeonX4000.kext from 10.10, few kexts had failed dependencies. Just extract kexts I listed from Yose installer, install by Kext Utility and it should work.
Slice is correct. These drivers are helping to run new El Capitan features. It's not possible to just "pull the tablecloth away". Since these GPUs work on real Macs, I think we have a real chance at fixing this problem and consequently making our Hackintoshes emulate Mac hardware even better.
I wish I had the time to do some research and help you guys out, but my hands are kind of tied, like most people here. So I wish Slice, Mieze & Co the best luck at fixing this problem. I'd also love to have sleep back again, but we have to wait for a real solution.