Ran into a bit of an issue with game play, when teleporting with a Nether portal I was killed by some mob I couldn't see, hear or have any way to avoid on the other end. If I'm immobilized and unable to see or hear anything while teleporting due to the audio/visual effects then I should be invulnerable for the duration of the visuals while teleporting. This seems like it would be more fair as you have no way of avoiding this type of death or seeing it coming.

Otherwise maybe an option to disable these effects from Gameplay settings?