Well... I'd recommend a general better class of doodads altogether, though I guess that's not really the point here.
Now, for one, I'd have to agree about the wall behind the throne, it's absolutely horrible.
- Quickly now, before it get's melted into someone else's nightmares, change it for the same kind as the side-walls.
To add more fluency and life to this terrain, I'd suggest having windows and rays of sunlight coming through them,
as formerly mentioned a better carpet and more details to the otherwise COMPLETELY flat floor. Add some small edges
to the pathways, or if not, something else to balance the complete and utterly unnatural flatness of that floor.
Those ARE from the UTM.
Though you're point doesn't not have merit, they do look horrible and should be changed for anything else.