Hello,
Recently i noticed that you cannot spectate mobs/entities in the Replay Mod, i thought this would be pretty cool. You can spectate a creeper when he sneaks up on you, or maybe the Ender Dragon when you are killing him? There is not that much to explain about it, but when spectating entities such as a Spider or Creeper, you have a different screen (Creeper Green, Spider 6 eyes) .
Let me know what you think!
E-Wood