This is a concern that has been sticking with me as I play through arc 2. The baseline for levels kept oncreasing and now it is at lvl 69 in early stages of Arc 2 chapter 5.
I think you guys should cap it at 70 and should not increase further so that players will have a challanging stage while also have the ability to progress the stage. Beyond level 70 would be too much for casuals and you guys have hard mode and madness mode for that