I had been deep deep underground and once i saw red stone below, i took a peek below. Oh what evil creatures could have spawned in the deep caves. It took me along time to get out up to the surface as if physics were added to the game for the mine carts, powered rail boosters would be useful to get me to the top just quick enough. I could not even find enough of anything so i thought it was best if there was more iron & coal and abundant of other things.
How will the elevators work for us? could it be with a rope pulley? old style elevator to support a mine cart? They could come in different sizes and i have no clue on the limit they could reach to the depths. I always thought if there was cave goblins and some may be blind and hunt by sound if you move.