I am a lazy person and spend most of my time digging holes deep underground, so I think this is a wonderful idea.
I made a suggestion like yours and i didn't know it was already created until Bacon pointed that out. Take a look at it and feel free to use anything posted in the thread. Here is the link. http://community.playstarbound.com/index.php?threads/vacuum-tube-transport.18813/
Thats fine, more tube requests more chance of passing, odd that we thought of it on the same day though.