I think it's pretty obvious the patch will screw up any mods based upon the units_production file. CA has already said that they will be tweaking sword units, and adjusting some others. If they do that, it could only be done through changes to the aforementioned file since that is where are the stats are kept. Seems like modders would be better off waiting for the new file if they intend on editing or adding new units.

Grifman