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Yes, I suppose you would really need to put big mirrored, long F Newts, into a special observatory sort of arrangement to be able to use then comfortably. It's slowly starting to make sense. F8 is great, but above 6'ish inches it's also very long, Cassegrains fold the long focal length into a short tube, but they have a greater number of critically shaped optical bits so they're more expensive. Refractors have no secondary obstructions and use all lenses, no mirror coatings, so are 'clear' but tricky to make in large apertures. All just physical compromises to achieve a given result.
If humans were all 10 feet tall we would see a lot more 12" F10 Newtonians aimed at the amateurs!
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