Some gameplay questions:

Loving my replay of Surviving mars, really getting into the nitty gritty!

Some questions:

1. Is there a way to automatically tag all the cave in rubble to get cleaned by my drones? Appears I have to click each one and hit the request.
2. I have been using the trains... mostly just for flavor. There's not a way to have them change elevation is there? The parts of my base on a mountain are feeling left out.
3. When I am mining an asteroid, is there a good way to tell the rocket to pack up everything and boogie? I seem to have to fiddle with the auto/manual settings and set requests.
4. Is there a way with Choggi's or other mods to play multiple mysteries simultaneously? Which mysteries require items to have spawned on the map at game start?