Map size has some serious errors. You can build in the corners of the map but they are blocked off from units moving to rest of map or even into your base. Because of this, a good 1/3 of the "castle" build area is worthless. Spacing of harvest areas in the "castle" is nice for human play but improper for AI play. Since the base locations are set, the AI tends to not venture out to the harvest areas until the base is built out a good bit.