So, I started building my map and I wanted to start with one large town surrounded by water. The more I mess around with plotting out everything the more I feel it would just be easy to shape my landscape to be the entire floor of the town and then just fill in stairs, walls, ect. I have made plenty of small to medium size assets and scenes where I never had to worry about this so I just wanted to make sure there was no reason I should avoid doing this.