6. Ilithid checks - I look at this question from the perspective of the subsequent game plot.
There will indeed be stronger ones, for example, the three sons of God, they should be given a certain value of resistance to Ilithid checks, so that the plot is reasonable.
Maybe it's just because the enemies we are facing are too weak (Lv1~Lv5)
It is necessary for the enemies of Lv9 ~ Lv 12 to give Ilithid checks considerable resistance, and also encourage players to use more Ilithid power to develop to different endings.