I think it does. For instance, I now think all of the physical stuff in the fade like the castle bits you walk on were stranded there when the veil formed. I could see this happening to the Golden/Black City too, just in a different way (possibly on purpose).
Ya, but that physical stuff was at the "border" between the material and immaterial "realms." Is the City even physical? I don't recall seeing the City when the Inquisitor physically entered the Fade.
If it is physical, then that is quite strange to see material deep within the immaterial and it being unreachable unless you slay thousands of elves, use a nation's stock pile of lyrium, and get the help of 7 other masters of magic that are more knowledgeable than an elf god would give them credit for.
In anycase, we went to the Crossroads before Trespasser and entered the Fade physically before Trespasser. The only new info is that Solas made the Veil, and it was hinted in Inquisition that the Veil was not always around. So, I just don't think Trespasser added anything to the mystery of the City.
However, we don't know if the City was around before the Veil, as it is never said in the Shattered Library, but human history says it was around as far back as their recorded history states, so if Tevinter was on the rise before Solas' rebellion, then the City is older than the Veil... probably...