Maarten,
I sympathize! The short answer is yes. The main problem is proving the encyclopedic value of lists of monuments. In order to do this, you basically need to define "monument" at the local level. I guess an article on "cultural heritage in Scotland" would be appropriate, since "National Heritage Site (Scotland)" sounds a bit odd, since that can only be "National Heritage Site (UK)". How does the German Wikipedia do this? I noticed my "National Heritage Site" article on the en wiki has been nominated for merging with "List of heritage registers". Maybe there needs to be a "List of heritage registrars" as well, i.e. the list of registers can include world, country, province, parish/county lists, while the list of registrars are the bodies responsible for the unique identifiers. Somehow you need to protect against the "original research" argument for casual new page patrollers. They will not, as you complain, actually read the pages in text, but they will confirm any references given.
See also Kilian's comments in another thread.
Jane