Looks like an ingenious arrangement! Should help you in construction too (theoretically) as the case and hardware can be worked on pretty much independently with your nifty drawer design!
I have the Rivendell pics open as I'm writing this and by God I wouldn't know where to start... The trouble is it's all one big complex so it's either all or nothing and to rebuild that much fragile elven architecture in such a small scale would be a killer.
How about the large building in the first image? It's been a long time since reading the book or watching the film so please forgive my ignorance but is that a stand-alone structure? It's still breathtaking and very intricate but working on just one structure like that would allow a larger scale and more scenery (and scenery is easier than buildings lol)
Tell you what would be a very easy (but far less impressive) construction project. Weathertrop... It's one of LotRs most recognisable scenes and I know plenty of wargamers have built it before!
But sorry I'm hijacking your thread, I'd much rather see Rivendell than something as dull as stone ruins! Think I may dust off my trilogy boxset and watch the scenes that show these buildings. Keep us posted with any more designs!
EDIT : Just checked the Google Warehouse for sketchups of Rivendell and found a few of varying loyalty to the film. Bearing in mind the film is of varying loyalty to the book I think that makes any one of them fair play!
The results are here
http://sketchup.google.com/3dwarehou...=m&btnG=Search but the one that looks most like your screen caps is too new for me to load as I only have V.6 and it was made in 7.
Check out the ones by Sauron89 for a film faithful but unfinished larger structure or 2 by wiccan for finished, low-res clusters of some very attractive elven structures.