Retile the main floor? Because it's unlikely you can remove the shower floor tile without compromising the waterproofing. If you have any underway pictures, some of the people here will advise on if that's possible and also if it was done right to begin with.

That’s helpful. I never considered the waterproofing aspect. Not the main floor tile. I like that. It’s the direction of the shower floor I don’t love but if it compromises the waterproofing, wouldn’t be worth changing.

If you can post a picture(s) of construction underway for the shower, some people here can give you opinions on if you can pull the shower floor tile.

I would remove the main floor herringbone tile and replace the with a larger size square tile in light greys

I'm on team husband. I love it the way it is and wouldn't change a thing. I can't believe the suggestion above that you rip it up and change the tile. Obviously, if you wanted square tile you would have gotten square tile. The herringbone is beautiful and I can't imagine ripping it up when it looks great as it is. It really is stunning!