I spent the last 2 days completely overhauling my Imperial Senate Building. It always felt too small, and a bit crowded. It was also asymmetrical which bothered me.
The building now has a central dome, and two wings. The offices are much larger inside now too. As a side effect of this, I overhauled my large Map Room. I rearranged them and made the maps fit better, but I needed to expand a few to fill up the walls properly. This is where I ran into an ancient issue. The maps in the my Map Room were made eons ago, before they overhauled the map grid system. I couldn’t expand the maps, as new maps dont line up with the old ones. I had to redo ALL my maps. Luckily, two provinces turned out to be on the new grid system.