To be fair, when you’re playing multi-challenges, particularly 9, the other classes get crippled as well; not just warrior. Barren Land and hunter for example. But I agree, warrior is pretty decent without FIMA.
I don’t think much will change since the dev has mentioned the game isn’t really balanced for multi-challenges. But he was open to tweaking the warrior after the rework and now is probably a good time to tighten the class. So maybe if you present a more thorough case, something could change.
Personally, I’m flexible with changes to the challenges but I imagine some might be up in arms if changes were made here. Maybe as additions; we’ve been getting new classes and mobs, why not challenges? I think I like Curses the most but this just empowers the cleric even more and I’m of the opinion that the class should be taken down a peg or two. Hostile Lands seems like a good newbie challenge but could also be annoyingly run-ending early on. I would think the mage would be, next to hunter, best suited for Fragile. Duelist tears.