Ideas to stop mass castle building for DOM_3

[Chazar]

I do not like the suggestion to prohibit castles on some terrain, but I do like the suggestion of "nocastle"-flag similar to the "nostart" flag! This would enforce nothing but would open up a lot of possibilities for mapmakers!!!

Especially scenarios with preset castles would benefit form a "nocastle"-province-flag!

I wish this flag existes, so that I can prhibit castle building on the bridges in my own Chandrea map...

[NTJedi]

Yes the "No Flag" suggestion could also work. For maps which are randomly generated perhaps this "No Flag" setting could be randomly added among the provinces. Something like one out of ten provinces and maybe more common for swamp territories.
Chazar's suggestion is better for map making since more options will be available.