Already have pretty much all of that as well. Although the tech demos do interest me; especially the Subversion one. Good for making random city maps. Plus, in case I lose another Steam account or something, good to have backups I suppose.
EDIT:
Behold the City of Itnetlolor:
That is pretty sweet. Does it give much in the way of options/views?
I've been typing away at my keyboard finding any other commands not listed in Quick Tips, but nope. You can only see the exterior of the buildings, and not the interior architectures.
As for other views, it's very similar to the DF visualizers in user-friendliness, and it's all vector drawn, so it's quite detailed and surprisingly resource-friendly enough to get alot of good views of the cities, if you're taking pictures from certain locations.
That view I posted, every building is still in full-detail (and still smooth to traverse as well with no LOD models). It's subtle, but you can see the sides of some of them around the edges. Some of the odder looking properties are actually really tall buildings.
EDIT:
To re-iterate, you can only change views using WSAD and QE for height, but you have the benefit of SHIFT to speed up and CTRL to slow down, and mouse-looking. Unfortunately, like I stated before, no interior shots can be taken, nor can you cut down the amount of visibility/buildings in view and LOD settings if any existed, as far as I know. Kinda wish though.
In any other case, this is still a really cool tech demo, nonetheless. Kinda wish they could've finished the game though. It's too awesome to pass up.