OK I incorporated the terrain control suggestion.

The theft rule is really not important I think, maybe it could be changed to something like "do not steal golden crockery and paintings" (those are the two main culprits I think?), or dropped (it doesn't really impact the game). One problem I see keeping this rule is that we have to check paintings because some hide secret switch and stuff. Plus some like to roleplay thiefs. Since the main problem is the selling, theft is okay but reselling isn't?
A rule like "golden crockery and paintings shall not be used for business"?