Not actually trolling, as I'm balls deep in this project, but being a Morrowind virgin more or less, I have to say that after reviewing the interiors for the game, it looks boring as hell!
Did people really find it fun wandering around empty rooms? Doesn't seem like there is much to do, and most of them look pointless. I'm crossing fingers that the dialog is outstanding, at this stage I cant find myself having any fun wandering what seems to be the same blank corridors and rooms for hours on end.
Do people have rose colored glasses on when it comes to the game? I feel like somebody should have told me that interiors are cookie cut from templates!

I'd rather see more than half
I think we are best to just leave all the dungeons in, but its just has to come with an understanding that we lower our expectations of quality of release for a good while longer.
After a while you'll learn which dungeons have had a work over and those that haven't. It may inspire those that are exploring to take ownership of the interior and do some work on it themselves in the Creation Kit.