I'm not remotely surprised that everyone I knew who complained about either of those first two initially, but eventually got past them, ended up far more skilled players and faster learners than my friends/acquaintances who did not. Personally, their pre-nerf forms remain two of my favorite dungeons of all times.
My only issue was the effort-to-reward imbalance. As it wasn't originally even required for Expert Roulette (and remained optional until the next dungeon's release), it ended up at the time far superior not to unlock Pharos Sirius so that one could get consistently fast (well, standard speed) daily bonus runs.