Yeah, after learning of the "Wilhelm Scream" I went through the same thing. I purposefully try to not figure out stock sounds these days to avoid another occurrence. At this point it completely takes me out of the experience.
Roland said that Madmole will probably be coming out with a new video soon. He's just been swamped. I truly believe he enjoys making them. He just also enjoys making the game.
Have you FINALLY allowed for all eyes to be replaced with guns that fire whenever the user thinks of shooting instead of the laborious process of pulling the trigger?