I totally agree with you, as you I'm no longer "hardcore gamer" and play causal, my pleasure is certainly not in spending hours learning the right patterns for the bosses.
If duty support was a great addition for casuals, it is in the same time spoiled by the increased difficulty of normal donjons at each extension.
This time, I felt no pleasure in leveling my characters as donjons are a pain, and if it keep going It will probably be my last extention.
If SE want an "elistist" game, it's not for me