I think, in part, that it would largely depend on some different factors.
First, are you building something for your home/table group and how much detail do they/you need for this location?
Second, if it’s something for wider distribution, you’re going to want more detail (as you’ve outlined) but the amount and depth of that detail should also vary slightly depending on what the location is.
For example, on the old maps, there’s that rail line that shoots off across the sea “to Tycheros.” So, for my home/table/pbp game, there’s an actual, albeit small, settlement at that rail junction. I think it was called something like Raven’s Reach or the like, but the name isn’t that important.
Basically it was a military outpost with small local village to support it. I used some altered pictures of Mont St Michel as inspiration and examples. The outpost/village is a tidal settlement that becomes an island at high tide. The area around is basically mud flats/shallows and the local villagers use that for farming, clamming, etc. The ‘rail line’ that heads out into the sea? Heads out to some crazy undersea tunnel that only actually extends few meters below the surface at high tide. Then it terminates in some sort of weird magi-tech portal that allows trains to enter/exit at certain times. The rail jacks who come in on those trains don’t like to speak of the journey and spend a great deal of time drowning the memories in alcohol and drugs at the fort. The Tycherosi seem less affected by it, but clearly no one likes the journey overmuch and thus it’s only done on rare, but scheduled occasions.
If I was going to write that place up, I could go into a bunch of information to hit the things you’ve got outlined above, but the end result would be far smaller/shorter than if I was to write up Illysia or Lockport.