..but I think not yet completely.
Sounds like an ambitious project, but with a very good idea that will keep you interested all the way!
If I may give one word of advice: try not to work on all the little diorama's at the same time. It is so easy to get bogged down in 20 different projects, working on all of them but never finishing one.
Instead, be very hard to yourself, start with one or maximum two, finish these and only then proceed to the next. You will see that it is so much more rewarding if you actually finish something from time to time... But it can be hard, because I think most of us have more idea's then time to build them...
And this I find the beauty of your idea: you work on one project with one theme, but still you can break it down easily in managable parts. Please take advantage of it!
Good luck, and sorry for sounding so much like "the old wise man who knows everything"!