By changing styles, you only mean around point C right? I dearly hope you don't change the rest of the map! :E
Meanwhile, yes I like the new screenshot, and prefer the inset even more, but something about the bright white of the bricks up against the wood puts me off. Maybe you could find or create a slightly more weathered texture, so you can keep with your current set of orangy-rusty red buildings? If you left the outside of the buildings slightly unkempt but made the inside spytechy and clean, I think that would look as good as possible.
(also, any chance of a shot of that whole area, so we can see how the tent, new building, and that tree look together, particularly?)