Don't like Blue Mage? Here is how to convince SE to change it...

[Shurrikhan]

You cannot learn new abilities from monsters without said monsters. That's why I also used the word "interactions". While they indeed didn't change the content, BLU will not interact with it in a way we've experienced before.

After killing a mob there's a small chance of gaining an ability. That's literally just Pyros minus a middle-man function and the RNG moved from which ability you get to further into whether you get any ability at all.

But hey, loot so vastly changes a fight itself in the time before getting that loot, right? Or maybe it's that the fight would hold zero value to you once you've acquired it that intrigues you? Yes, I got my raptor skill! Now to never do raptors again because that was the only thing they can give me! Sat-is-fac-tion.

NEVER. EXPERIENCED. BEFORE.

I mean, we wouldn't want to use BLU to revamp systems towards greater intrinsic attractiveness or longevity or like. That wouldn't be "new" enough. /prestidigitation in the literal sense

If you've ever did a single Roulette, you've participated in doing "old content".

If the dungeon rolled itself was old and supplies nothing to progression (e.g. only Poetics or Mendacity when you've outgrown both), then yes. If it was not, then no. I'm not sure why someone has to point out to you that a coin has both a heads and a tails.