What’s, in your opinion, the worst level in each gauntlet?

I was actually thinking a lot about this, and I think I know the problem with Fire Aura and why so many people don't enjoy it. There are actually a few reasons. It is really interesting to really analyze a level to see what makes it good/bad.
1. The song: I personally don't like it but that's not really the problem because that is completely subjective. Fire Aura just starts out so slow, and the level reflects this. The first 20% of the level is just really boring, and you have to play it every time. (and most people will die pretty far in a LOT)
2. The deco: It isn't very interesting to look at, especially in the beginning. Makes the start even more boring.
3. The gameplay: one of the worst balanced levels I've ever played. Starts super slow and easy, easy ship, then suddenly massive difficulty spike with first wave. Then it is easy until the second wave, easily the hardest part, followed by some parts that while not hard are really easy to mess up. (especially the ufo). Then theres that random troll orb (pretty sure its the only fake in the level) which according to the comments gets a lot of people. Now, the level is a lot more fun for me because I'm a lot better at wave, but it is super hard for new players, and the level is going to be played by a lot of new players, being in a gauntlet.
4. Position in gauntlet: I doubt this level would be played by many people if it wasn't in the Lava gauntlet. Fire aura is the fourth level in the lava gauntlet, which kind of feels like a point of no return and that you have to beat it.

So basically, Fire Aura's boring start, hard waves, and position in the Lava Gauntlet are what cause the level to get so much hate.

Also, random rant: why isn't FIRE Aura the last level of the FIRE gauntlet, switched with MAGMAtic sanctuary in the LAVA gauntlet. Plus fire aura is the one of the only non themed levels in lava gauntlet, and magmatic sanctuary is the only themed level in fire gauntlet. AND fire aura feels like final level difficulty while magmatic sanctuary feels a bit easier than Danger Zone. (thats debatable though)

btw fire aura took me over 1000 attempts, way more than any other harder level before or since that I can remember. (Except Geometrical dominator maybe idk I don't have access to my old account)