Perhaps the reviewers might have suggested improvements to these clearly substandard sites. A couple of suggestions:

1) Skara Brae has clearly not been renovated for a very long time. The houses lack basic amenities such as television, fridges, and internet. Much needs to be spent on this village.

2) The Ring of Brodgar has little (as the reviewer suggests) to interest younger visitors. Its size and shape would make it excellently suited to having a miniature railway installed to take visitors round the site.

(Other suggestions welcome.)