I have to be honest, I prefered the techy bit when it was just the two rooms, chassis stuff and everything else. As a few other people have said so much stuff on our cars relates to other models that it could be east to miss summat useful if it was in, say, the anglia bit and you drove an escort.
But, just a suggestion for another room, some sort of (multicoloured) Swap Shop!? Only im sure many of us have got spares that we dont need or want, yet there are things that other people are crying out for....So a room where we could put up requests for swapsies might work?? (think back to when you were six, a nintendo for two cans of coke GAME ON!)
Richard