mementos just ends up feeling like a slog to go through
truthfully, tartarus was too, but it at least took a couple of steps to try and make it less monotonous, how effective those steps were is mostly up to personal bias
they weren't that effective
no matter how you slice it I just generally dislike procedurally generated dungeons in games like these, they tend to feel either tacked on or too much of a slog compared to the dungeons with, y'know, actual level design