You're right that the world was still dangerous with Calamity Ganon around, so a full on city is probably too much to ask for anywhere besides the place Tarrey town is situated.

But it would have been interesting to see more than just the occasional adventurer getting smacked around by bokoblins, i.e. a group of adventurers that forms temporary camps. Something neat to spot in the distance.

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>Which would be cool, though the impression I got from the trailer is that the monsters are also back. Hopefully it doesn't go in an annoying Minutemen direction...

My hopes are not high, but we'll see!