For GPS/Keyboard testimonies check original thread here:
AllDroid.org - View topic - [Rom] Stable 2.1 Rooted ROM for moto DROID-NANDROID required
For backlight, people say something about a 'power widget' trick, but the confirmed fix has been fixing the framework.jar (java archive) pack, this one specifically:android.os.Powermanager
If noone on that thread has released their patched one soon, and I get around to bringing mine to 2.1 I'll post it here. Or anyone with a little java knowledge should be able to do it using the new one and the one from the droid.
EDIT: Seems
greek himself will be posting it shortly.