On the inclusion of setting elements

I have a very particular setting in mind for my 0e homage game. I keep the setting in mind as a write the rules.



Do I provide some sourcebook material, or just imply the setting? What are the pros and cons of each choice?



If I do include the setting, how detailed should it be? Should it resemble a gazeteer? Should just name the country and give a hex map? What's the feeling on this?

On the inclusion of setting elements