One thing I've noticed while moving through dungeons or caverns....
Holding a torch does NOT produce light until placed.
This means you have to put a torch up to see your surroundings while exploring. Annoying if you come across a DM or Okekai (black spector) in the drakness. Yes, DMs light things up but that means you being fireballed.
Programming wise, you become the light source if holding the torch. Lights out if you switch to sword or pickaxe.
A tactic that could be used is have only one torch, find something ... mob or ore; place then switch to pickaxe or weapon.
Still I find not having light when holding a torch annoying.