OP, you definitely jumped the gun pulling numbers a whole 24 hours before the deadline.
Now that I've watched all the parodies, I personally think the overall quality has greatly increased from last year, and Cory's ears will be safe this year. As you guys have said, making a parody is hard, and I think teams are getting used to navigating through developing the idea, moulding the lyrics, recording properly, making a good video - and seeing great examples they can draw inspiration from.
Honestly, the girls and guys who can REALLY sing brought out their A-game this time, so I'm optimistic about the competition moving forward.