WELL, I'm not sure I have 20 registry hacks, but the umpteen I use for Windows 7, work just fine for Windows 8. No biggie!
When I find a group of hacks anywhere on the internet, for any OS, they are usually a bunch of eye candy hacks that have nothing to do with the speed or efficiency of the OS/Computer. In fact, they usually don't even address speed or efficiency. Too bad, because "That's my line".