One thing it'd be interesting to track is that for phase 2, they pulled 6 extra skins when casting the various bridge modules. The idea was they'd have stuff in case they needed to blow up a whole wall (at least that's what I remember the memo saying), but I think it was more so they could quickly mockup a different starship as needed. Blowing up fiberglass is just NOT a good idea.
I've often wondered if those saw use in early TNG on those mix-n-match battle bridges and the like. Can't believe they'd've let them go to waste. I'm pretty sure they weren't used for RELIANT, because the different look of that bridge was done (according to a Mike Minor STARLOG interviews) with not much more than balsa wood and paper decals, since those stations get blown up in mid film and during the climactic action.