The pitch shifting gives a nice little bit of variance, but yeah it especially works great in the menu.
And yeah the launcher flipping can break the game, but it could be cool in a further platforming section where its required. As soon as I saw the double NPC sprite I immediately thought "Wow, this looks like a rare bug" lol.
I always try to give as much detailed feedback as I can, partially because I think its far more useful than just a score, and partially because I like receiving detailed feedback so it only makes sense I should provide it. I know there's been several times where what a player considers to be a bug or simply unfair, can be explained either by a certain detail being missed by the player, a mistake in the games design, or frankly just poor design.
I wish you the best of luck in your continued work on this project, I can imagine its come a long way in 5 years. Having strangers play your game is really where the rubber hits the road, so hopefully you'll be able to get several rounds more of playtesting in the future!