I understand the question mainly concerns neutral dwellings, Pandors, and Seers, right? They shouldn't appear in the original design; they are the result of a bug.

So, part of the "valuable objects" will be replaced with dungeons and a huge number of Pandors. A really huge number. It's unclear which is better.

I can't imagine 8MM6a without a bunch of outbuildings. Why was it done this way? :D

I launched Frozen Dragons – now sad dragons guard 3 Pandors and a bunch of dungeons instead of large dwellings.

Not that many buggy zones were generated. Maybe just lower the chance? And it's not entirely clear where the information comes from that these are "buggy" zones. If there are no castles in it, why shouldn't the chance that the zone will be neutral be high.

P.S. Where did you find a castle-free zone on Jebel?