Should we focus the main town to be in one building style?
I believe we should focus on making the town feel more like one in which everything fits together. Right now, the town has a lot of different styles, making it look disorganized and almost misshapen. I believe the "Castro" square and Michael Parenti University's styles are really good; the castro one is easier to build and looks good, but the Michael Parenti one looks better but is a lot harder to build.
I think we don't have to limit ourselfs to 3 blocks.
A bit of Oak Log framing, and not too exotic materials to fill it in could be a rough guideline. Also some buildings already use a smoother stone framing, that style could be used for some more industrial buildings.
Also detail level to the taste and the ability of the architect.