Randomized Tracks in Mineshafts

In the mineshafts, there should be a variety of tracks instead of the standard ones only. Although mineshafts contain spawners and ores, there could be another reason for players wanting to explore the shafts.

Also in parallel to the Caves and Cliffs update, maybe have some tracks have a drop off into lava or water as seen in movies.

Possibly a housing area where miners would stay and would provide players with a bed and furnace, but to balance it out there should be a zombie or skeleton to restrict playes from getting the materials early on like the witch spawning in the witches hut.