Why encounters with a difficulty slope are bad

[lololink]

Conflags, Titan Egis, and Bees in T6 are good ways to do DPS checks, you don't need a hard enrage to prevent turtling.

Except that you can't really put only add DPS check all the time, it would feel the same too much, DPS check is not only to prevent turtling but to prevent too much raising that would ruin some mechanics( although FCoB have a lot of death punishment T10 with the stacks and failure punishment move, T12 where the boss get buffed when people are dead, etc... )