>>536279838
>has a lot of mechanical depth
>rich in content
>unique exploration gameplay that is intertwined with the actual world of Arknights (Sargon)
I agree, it is hated a bit too much. Though, yeah it is slow as all hell and you need a big roster for it. I had to force myself to play through the beginning slog, and even then that took a while. The mode though is something really different from everything else in the game, and one that is bigger than IS, if you're willing to fully commit to it.