I agree and support the idea of the resource costs, but this... have no limit to underground length. Same for pipes. ...just simply removes part of the puzzle and challenge from the game. In my experience this doesn't really add much of a challenge, you just need more room. If you need to jump a la...

TL;DR Underground belts and pipes should be placed tile by tile instead of being one max length What ? Instead of underground belts being a fixed length, like 0 to 4 for yellow and 0 to 8 for blue, they should be placed one by one. Therefore if you only need to jump under one belt you would need 3 ...