I'm really enjoying this game. I started playing on the v0.75 ten days ago, and I've already put 20+ hours into the game. I'm having a lot of fun creating the transport systems, and then sitting back and watching them work.
One suggestion I have:
Sometimes I want to build a long railroad track through valleys and hills while maintaining the same elevation. Before I build the track, I circle the terrain with the camera several times to understand the topography before I make a route, because I want to minimize the cost of terrain leveling. I think it would be cool if you could view the terrain elevation with a color gradient, similar to topographical maps. The color switching function could be similar to when the terrain appears white when placing signals.
Thanks for creating this game. Keep up the good work!