Yeh, that's pretty sweet
We approached the modeller but he didn't want to let it go...maybe he was hoping to make some money off it. Not likely if you ask me, since it uses the films as a ref I think. He was kind enough to donate a tower though.
My personal opinion is that there are a few way of approaching it. Interpretation. We had some guy from UCLA who was doing population models, One of which was Middle-Earth. He was using historical estimates of Europe. He reckoned there was never enough room in the city for a centre of population like Minas Tirith. I'm not saying he's right, but Tolkien didn't get everything to the level of realism that he wanted. He even bemoaned his lack of knowledge of geology before he started creating M-E. Given several lifetimes, I'm sure he would have changed it.
We got another chap doing weather sims for the MET in UK, and he ran M-E through it. Again, no doubt his predictions don't sit with Tolkien. He offered to run our data though it. You get all kinds of boffins with their specialities and insights
Anyway, this guy was opting for filling up the mountain slopes behind the city proper with dwellings dug into the rock, which seems like a good compromise.
I'd probably opt for following the book, with the modifications mentioned. I'm not a stickler for absolutely following the book. For starters how is a 2D paper map to be projected onto a sphere while preserving distances given in the book? Given it's The RedBook of WestMarch, how reliable are Bilbo's measurements, etc, etc, etc.
monks