I did not have success. Here is what I tried:
Installed Mac OS X Server 10.4.7 on my G5
Installed the NetBoot for Mac OS 9 package
This produces a setup where my Sawtooth successfully NetBoots 9.2 as provided by the package.
I copied my existing working System 7.5.5 and 7.6 installations with...
Worked great here on 10.4.11 on my G5. Reading through some MacRumors posts it sounds like it unintentionally only works on G5s right now, unfortunately.
I've never had a chance to play with Mac OS X Server NetBoot, so I plan to tinker with that this month! One abuse I intend to try is seeing if the CHRP-enabled versions System 7 can be NetBooted.
On my 800 MHz model, the fan is audible but moves quite a bit of air. It's not extremely warm, even though I keep the paste fresh, but that may simply be due to the lower clock speed.
FWIW, everything I have retrobrited with the hair developer cream in the past has re-yellowed within a couple years, even when sitting in a dark closet. I am not sure there is a fool-proof method.
GlobalTalk is still going strong! I'm not sure who is "in charge" of approvals, but the latest update on the sheet I see is from @Ron's Computer Videos so maybe he can help push yours through :)
Downloaded a bunch of photos taken that day from my DSLR into Aperture, then organized and edited them. Apple may have given up on Aperture, but I never did :)
It seems to me like the 4XDC version would be beneficial only for systems like yours where you experienced 12V noise issues with the Micron Xceed card installed.