How about everyone stops yelling the forget at this kid's stupidity.
No, terrains nor interiors are coming back. However, I do see a few cases where a random landscape generator could come in handy. Shouldn't there be a way to adapt the Infinite Mining mod to randomly generate a landscape, using preferences? I haven't played an infinite mining server in a long time, and this haven't experimented much with its capabilities, but this could be possible, right?