It's more level of community in the housing wards.
Although there were a lot of similarities to the NA wards... The JA wards are/were quite amazing in some places, there is a whole night market in Tonberry (I think) with out of parcel building.
Youtube of it:
https://www.youtube.com/watch?v=6oPC4D-rHqg
I am hoping we get some of this feeling in Materia too, when that housing finally opens, rather than the more subdued and empty way. The number of ex-JA server players does seem higher now all the day-trippers have their 15 days of free gametime and left.