This is a real trip down memory lane.
I'm mostly starting the new project with materials. I like some of the areas in the Women's Day piece, but a straight execution of the design won't give me enough area for some of the bigger ships - playsets and some smaller ships can always go on a more neutral shelf in the room.
So far I've got a 4'x4' sheet of 1/2 cast acryilc, some white high gloss plastic laminate and 10 guage cold rolled steel. I like that the city is all white, but I'd like to introduce some texture to the environment as well. Access to wood and other materials won't be a problem, it's the more unusual stuff I want to experiment with. I've been using high density foam (like strux) in some work related projects, and I'm curious about introducing some more organic shapes into this, but it needs to be bullet-proof for the kid play.
I thought the acrylic could bee cool if I had it CNC'd into landing platforms shaped like the ones in the AOTC the opening scene on Coursecant. You could see through them to another "hanger" area below like where the Jedi starships were. That level could have a metal floor and be a darker, lower level of the city.
LED lighting could also be neat to incorporate into the floor or around the landing platform edges like on Bespin or Kamino.
I think the white P-Lam will be nice and futuristic clean, especially if it can be lit so it's a little reflective. Need to look at durability though, this will be played with by the kids so it cannot scratch too easily. There's always been something nice about the Tantive IV.

I'd like to find some good tubing to accessorize the areas, like we saw on Yavin and Hoth.