I like to think that splitting the Great Artist into three categories will mean that Great Writers will not be required to be "Arty" writers, if you catch my drift. For example, judging by the Great Writers ability "Create Political Treatise", it sounds like GW's aren't only writers of fiction, but also political writers, debaters, philosophers and so on.
This could be a shortcut to including other historical Great People that doesn't easily fit into any of the original categories - for example, Dag Hammarskjöld is by some regarded as one of the greatest diplomats of all time, and he is also somewhat famous for his philosophical writings. Do you think he would classify as a Great Writer? Are there other people who would fit the label GW, if we extend it like this?
This could be a shortcut to including other historical Great People that doesn't easily fit into any of the original categories - for example, Dag Hammarskjöld is by some regarded as one of the greatest diplomats of all time, and he is also somewhat famous for his philosophical writings. Do you think he would classify as a Great Writer? Are there other people who would fit the label GW, if we extend it like this?
(they can just give him the Count of Monte Cristo though). The French civ does seem to come full circle here, since the "unique unit"ness of the Musketeer is to a large degree due to that work of literature. After all, it's just another word for musketman or I suppose (no etymologist), just the turning into English of the French word mousquetaire.
