Hi! I know this thread is old but I hope I can help anyone else trying to find tuned values that are not defined in the actual tuning files.
Getting the default values takes decompiling EA's game code, but once you do, open the associated py file defined in "n" at the top, (eco_footprint_tuning.py).
You'll find the tunable definitions that map to the file and provide defaults. Within the ECO_FOOTPRINT_STATE_DATA variable are the default values for "green_threshold" (-400) and "industrial_threshold" (400). You would then be able to override these defaults by creating your own copy of the xml file above.
Example of the python definition:
green_threshold=Tunable(description='The number at or below which a street or lot is considered green. ', tunable_type=int, default=-400), industrial_threshold=Tunable(description='The number at or above which a street or lot is considered industrial.', tunable_type=int, default=400)
