Here's what I managed to get done on the Transporter room rebuild so far:

I don't know if I'm gonna keep the greebles up on the ceiling. We never see the ceiling in any of the movies so I have some freedom here. One could assume greebles would be up there too, if keeping with the original set designer's direction that the transporter room feel as if you were inside one giant machine. I do plan on breaking up the ceiling with some light panels and visual rest, so once that
and the floor grating is in place I will be able to make a better call on keeping the ceiling greebles. Right now, I must admit it looks too
Borg.
In keeping with my guidlines of rebuilding these sets with more modularity in mind than in the past, I'll be taking advantage of this to be creating the following transporter rooms:
1) TMP Enterprise Transporter Room (with purple lighting and small doorway on the wall to the right of the transporter pad)
2) TWOK Enterprise Transporter Room (with bluish-grey lighting and open side hallway to the right of the transporter pad)
3) Reliant Transporter Room? (we see the pad in TWOK, unchanged from it's Enterprise apperance, but I will possibly come up with some other details to change beyond the camera view)
4) Grissom Transporter Room? (perhaps with solid floor, well-lit, and different color scheme)
5) Both the Regula One AND Old City Station Transporter Rooms (both are basically the same set with some cosmetic details changed between them)
6) And an emergency transporter and cargo transporter for the Enterprise, in both TMP and TWOK lighting schemes.
I know that sounds like a tall order, but creating just the TMP/TWOK transporter rooms will give me most of the assets I need to create the others. I'm particularly excited about the Old City Station transporter room, as it's one of my favorite sets of TSFS.