It might be useful if the graphics from lincity-ng could shared with this project. We could have a central repository for new buildings and monuments that serves both projects. There might be some code refactoring to achieve this.
OpenCity have a 3D game engine, but Lincity-ng is a 2d iso game. So there is no way to share graphics. Event base models. OC need realtime rendering and lincity-ng pre-redered ones.