If you can get your wife to live a buried house you are doing better than most of us.
I wanted a Monolithic Dome home but no that would be ugly.
And there it is, judgment without education...
'UGLY' is in the eye of the beholder.
Think loaf of bread, but with one LONG SIDE showing, all windows.
An unsupported arch with several hundred tons of dirt on it needed a center support... So I added a chimney for traditional combustion heating.
I restored a big, old enameled cook/heating stove. It's never been lit, makes a flat space random crap catcher, but the wife likes it and it's functional should everything else go to crap.
With ambient ground temp between 63°F and 68°F it's not like we are going to freeze...
Using natural stone accents/retaining walls outside, and with a slight tilt to the widows/low E coating reflecting the ground colors in front of it, it almost looks like its organically growing from an exposed rock formation.
With 15 foot tall glass, no shortage of light, and it's like any other home with a domed ceiling with the exception there aren't any square corners. Square corners are crack points in concrete...
I guess that would be bad if you had some compulsion for square corners, but that would be a YOU problem, not a structural problem/general population problem.
I had to fit all the cabinets/bookcases to the walls, but that's not a big deal since I'm a DIY type.
My wife put sea shells, stars, different things on the form so we have little 'Accents' in the ceiling that would drive anyone trained to live in a square box crazy...
Kitchen, dining room, living room one great room across the front, with one bedroom (office/hobby room) being the only thing walled off in the front.
I can't speak to your wife's preferences, but about everyone thinks *Basement* when I say earth sheltered.
It's anything but with 15 foot ceilings, 15' X 60' of glass, wide open spaces, lots of bright colored/patterned tiles, light colors...
I just knocked the hill top off, pit in foundation/drainage to divert ground water, poured the home, put the dirt back on. The only difference between me and any other wide open floor plan home is I mow my roof.
I had to add coverage outside because my wife thought it was TOO wide open. Some blocks just off the patio, an 8 foot tall sun room/greenhouse (heat trap) added later means anyone in the front yard can't see right into the home.
The sun room is her 'Hen House', green space with library, sewing space, and her wine swilling area with her friends as well as being a heat trap I use to regulate the home heat. Still 7 feet of unrestricted light above that added sun porch.
So much sun I planted vines that grow, hang down over the top half of the windows in summer, cut them back in winter... Again, organic, zero energy input thermal control.
Sun porch wall, vents at top and bottom. Convection draws in cooler air from the house, warm air exits the upper vents and enters the house. Exactly zero energy input for heat.
Vent the sun room outdoors, heat convection outbound draws cooler air from tubes into the home. Ground temp cools the air, removes some of wonderful humidity, circulation cycle complete, zero outside energy consumed.
Like I said, I spent 5 years researching and thinking it through...
No one thinks through a square box, and it has exactly zero character.
It's square because of precut, dimensional building materials and lack of imagination/effort.
There is a reason you pay a crap ton for curved walls and/or even crown molding.
There is a reason homes with character and things are through through are called "Craftsman Homes".