I ended up rolling back to the 10.5.5 from the most excellent optional packages offered by our good friend eNIK http://www.enik.ch/2008/10/osx-leopard-1055-on-the-eee-1000h/ then changing the variables accordingly.
I also was wondering *havent tried it*, but I noticed that the <key>Broadcom2046FamilyUSBBluetoothHCIController</key> doesnt exist in the info.plist in 10.5.6. Could we add this section to the new kext in 10.5.6?
Also it makes me wonder what the 10.5.6 kext would add to our installs / what the benefit would be over just rolling back to the 10.5.5 kext.