I noticed that "+1/-1" note on a number of Karthi barracks in my current campaign (236 BC, defending in Capua, rolling toward Alexandria and tenatively touching the Pyranees).

I also noticed I can build up to 4th level regional MIC's in Spain with a tupe II gov, but seemingly nowhere else. Handy for buiolding Loricati and Lanceraii so I guess that explains why it has been allowed...it is intentional, no?