Alchemical Research Facility, Ala Mhigo, Amaurot, and the Dead Ends still have managed to live beyond any sort of "shelf life." They are easier than they were at release because of potency buffs, but they still cannot be absolutely facerolled like Endsinger has become thanks to failsafes laid by forced ilevels. It's not about shelf life at this point.

As an enjoyer of the narrative and understanding these fights to be literally the climax to their expansions, this is imperative to be fixed- Endsinger especially.