Well. this is nice to hear. I'll have to go back to the drawing board to examine the properties that could have sensible defaults from environment variables. This is now even more important, given one of my needs to produce a managed WLS container (ARQ-785) where more environment variables could be used.
As an aside, I'll have to be more careful with naming the properties used in a configuration, given the current mess over WL_HOME and WLS_HOME.