What I was looking at is if you add facia on the layout and make the bottom of the fascia a consistent height from the floor, trying the screw anything in the fascia back in that vee will be next to impossible, you can't get a drill in there. I guess I am looking at it from an American construction approach where there isn't necessarily a "table" per se, you have roadbed under the track but the scenery isn't necessarily tied to the roadbed shape.
On another note, it is too bad you can't extend a track across the doorway and then to the left from Letton (which apperas to be the lowest levels) going under Bedford, to allow you put several staging tracks to store equipment and alternate trainsets.