Well ... I found some bosses in the leveling dungeons a bit too hard, personally. I got through, but would have wished they were easier. For some people, what you perceive as "engaging", we perceive as "frustrating". But I'm not complaining, since most of the really hard content is optional, so I can simply choose not to do it.

If however the difficulty level of future mandatory dungeons and trials is like the current level 99/level 100 dungeons (and trials), I'll unfortunately have to accept that the game is not for me anymore. And yes, I want msq dungeons to be easy, I just want to have fun in the game, and dying/wiping more than once in a msq-dungeon would not be fun.