I know people have different opinions, but at least for me...

The Masked Carnivale is absolutely and without doubt the single worst content I have ever experienced in an MMO. Meme-fights were fun for about a floor, and then it's just stupid. On top of that, the multiple acts where if you mess up later on, you start all over again. I never finished Floor 25, and apparently the new content is locked behind it. Died in act 3 with less than 20% hp left - when using Loom to teleport out of the aoe, but died to server tick or something, cause on my screen, I was clear. But, that's ok, that happens.

And then I remember I have to do all that again.

That's a hard no.