I think some other things that made balmora in particular feel so vibrant was the density of quests available. You had the sense that there were whole opposing factions that were very active. you have fighters, magic, thieves, house hlaalu, the temple, and the councils guild i think was one. on top of that you have a few quests from the inns and bars. So having the sense of others doing quests makes the town/city feel a lot bigger
I'd note that for me, a lot of the "feel of size" was based on not touching any of the quests... However, quests play an important role, too. Especially, as you hint at, the presence of facilities and guilds. Pointless houses don't really serve too much other than as sight-seeing filler: that's partly why
Daggerfall's cities could've felt just as large and liveley even if they were a bit smaller. For Daggerfall city, of course, the important parts are the landmarks: you've got the mages' guild, the fighters' guild fort and its moat, the shopping district, the main street grid, (amazing given how haphazard and unrecognizable most streets in the game are) the distinct neighborhoods, and, of course, the road leading up to Castle Daggerfall itself.
What is the capital city and how big can we expect it? If the five cities are "massive" just how big can we expect the capital to be?
The capital would be one of them, most likely.
Daggerfall, for instance, had 3 main giant capitals. (those of Daggerfall, Wayrest, and Sentinel) that were gargantuan: all three had the equivalent of a 12x12 block of
Oblivion's cells of buildings, plus a wall around the entire thing. On top of that were another 37 capital cities for lesser kingdoms, (the 5 other "kingdoms" were just non-independent territories without capitals) each 10x10 in size.
Lore states that Skyrim has/had 8 truly major cities: any and all capitals (imperial, rebel, cultural, historical) would've been one of them. Or, alternatively, a smaller city that WASN'T the largest. For instance, Ebonheart in
Morrowind was comparatively tiny: mostly just a dockyard and a massive fortress, as it served more as an administrative hub than an actual city.
Great job with all that, Nottheking! I agree with most of what you said. It feltquite sad, I thought in Oblivion, that there were only 10 villages and the average village size was 4 houses. One thing I disagree with you on is the Imperial city. I do not feel like it seemed large and alive. For me the most large and alive was Skingrad because the layout made it seem bigger than it was and the thin streets made NPCs fill it more easily.
Well, I'm not saying the IC felt PARTICULARLY alive... Just that it managed enough of it and enough feeling of scale. (mostly, it just felt LARGE... As in sprawling) Overall, yes, Skingraad did the best, though for me it was a personal letdown: it was the city I'd looked forward too the most, and I'd been expecting something around twice as big as it actually was. However, the feel of a dense, urban city was MOSTLY there: and the crammed space meant that there were plenty of NPCs in sight, contrast to the often-sparse streets of the IC.
As for Vivec seeming bigger than the Imperial city, I agree, though I think this is because it was PHYSICALLY quite substantially larger, just that a lot of that was empty space.
I do agree that spacing can play a key role: placing a river through a city (or canols for Vivec) can add to the volume without feeling like it's stretching it too much. I think it's a key factor in the feel of Balmora, for instance.