Thank you.
In addition the question regarding whether 'unique' scenery with warscrolls use their warscroll rules in addition to the random effect has been answered by the GHB designer's commentary here: https://www.warhammer-community.com/wp-content/uploads/2020/08/66ywBB8J1iRGh4t9.pdf
Not the answer I wanted to hear. Particularly combined with the above pdf of rules for the official scenery, where most of the named terrain is particularly drab and uninteresting both visually and mechanically, and when the expanded lists of random terrain effects are padded out with a lot more drab filler effects, such that most of the time terrain isn't actually doing anything at all. Disappointing, certainly. And if they were only going to keep one generic woods terrain, imo it should have been the citadel woods, as you'd then be able to visual distinguish it from the faction specific version of the Wyldwood.
But whatever, an answer is still an answer, even if it isn't one that I personally like.
Sception's post in Qs re: Pitched Battle 2020 Scenery Warscrolls was marked as the answer