Most of the groups I mentioned are from the newest groups list. None were ficitious. I was not trying to pick on Rhode Island, it just shows a group restricted to a very small region.( Actually an area of 37 miles x 48 miles, almost a third which is water.)
As for the mention about the different burger franchises each having their own group because of evolution, each of these groups are subcategories of "Hamburger". When a category gets large enough, it will naturally get subcategories. I am just trying to make a new subcategory of independent restaurants.
The subcategory "independent diners" is dedicated to non-franchise diners featuring the best homemade food. It does not include restaurants featuring new style cooking or specialty dishes. Also, the independent diners category is regulated to sit down diners and cafes, no drive-ins or take out stands.
Sometimes waymarks are cross-indexed. I have a waymark that is a "Geographical Center", A "Compass Rose", and a "US Benchmark".The item fits in three different categories. Should it be in only one group? Then again, people go hunting only specific types of waymarks, and may miss the item if it was not cross-referenced.
I believe that the group Diners, Drive-ins and Dives is properly placed in its subcategory. It is for independent restaurants, but not always independent diners.