Well, there is always unpressurized aircraft.

I did think that bit would be obvious, but point taken, I should be more precise. Actually, a second thing I wasn't clear on-

I know there are answers like eye-masks, and the whole debate over whether you should open them or not. However, I am more concerned with actual cabin design.

For instance, on larger aircraft like the 747, some were designed with a long mid-cabin galley and heads, creating narrow sub-cabins along the side. One thought would be to make "dark" cabins, where you would be required to close the windows in that section after takeoff and until landing for those looking for a darker environment, while another would be set where you would only have glare shields to prevent direct sun glare.