Only way I can see it being done, is if we could place pre-fabed walls and ceilings. Placing log by log would be....difficult programming, to the best of my knowledge). By giving us a few templates to work with, it could work very well. Just let us be able to build basements then, I don't know why I want one, but I want one and that's all there is to that.
But yes, let us have all the tools feasible to be as creative as we want with this game. Though give some options for "generic" items too, for those that just want to slap together a building and call it home.