Multiquote is ****ing awesome.
Why not? Whether they have the same cells as the rest of the world or not does not change their size if they have a 1:1 ratio.
Exactly. It doesn't matter if they are in cells or not, the 'fake city' in the exterior cells is the same size, just easier to render because there are no NPCs or anything to render.
I'm not too worried about how massive these places are as long as I have fun.
We will have to wait until they give a wider birds-eye-view pic or video before we can really tell how massive the cities are. To me, Bruma felt moderate sized when playing, but when you look at it http://www.uesp.net/wiki/File:OB-Bruma-01.jpg way it looks kind of puny. Maybe it's just me.
True, I got lost a few times wandering around the smaller cities, much more than the Imperial City. When a city is compartmentalized (Wow that is an actual word? Cool) it makes it harder to get lost. You know where the shops are, where the Arena is, and all that stuff.