It would be cool to connect all the tunnels in the future, like having a big residential area that connects off one of the tunnels. Connected the tunnels near where you mine trees to something. And it sounds stupid but a race track or something, like to race your cars or something. That is kinda stupid. But I do like the idea of having all the tunnels connect. And it would make the map able to be expanded unlimitedly. And you could also go above as they did with True North. That could break the feel of the map though.