Freight Elevator custom game mode

I was playing through 1.0 and found that no custom game mode with the freight elevator has been added yet. I would love to see a game mode where you rise through the freight elevator up to various randomly generated floors infinitely as this would provide an interesting task to build enough factories for each level and would utilize the freight elevator's drill function more, which I find to be quite unique. You could also require different drills depending on the level of the floor and even select from a couple options of floors with different drill requirements.