Whether cosmetic or investment for large empires, roads could definitely be seen added to castle story. I think in Castle story's current form it takes too long to move bricktrons from one point to another. This hurts a conquest or PVP players since they have to respond to attacks on different sides of their area of control. Roads could be a small investment that just boosts the movement speed of the units traveling on them. Another option that answers the same problem could be mounts such as horses. Please consider these ideas.