I already liked the first table very much and your new gaming table was great again. What I also like is that self-construction still plays an important role for you and your group, even with and despite the well-made and nice DU Zone Mortalis Terrain.
If I saw that correctly, you built your wall from a wooden frame with MDF panels. Did that have special reasons? I ask because I bought 5 cm thick Styrodur (XPS) for my own wall. The height should be around 40 to 50 cm and I hope and expect Styrodur to be stable enough for this.
Then I have questions about playability, please. I see two or three transitions depending on whether it is a dome wall or a city wall. How does that work in games and do you use special rules for this? Among other things, I ask myself whether the passages are not blocked too easily, or whether miniatures that ignore terrain could have too great an advantage?