Maybe. Truth is, the team keeps things pretty secret for as long as they can so we don't officially know what the next update is even gonna be. We all have our guesses and in some of them, they involve elements of conqueror. If that's the case, maybe they will add some new types of city plans based on defending an area.
But they will still be very simple. If you want cool, creative, crazy city plans you need to look at what others will do in addons. Because of how new SS2 is there isn't much yet but they will be coming soon.