The problem of end game content is that we do this missions a lot and with the knowledge of whats going to happend we go prepared for what they got for us.
Those quests where all of them challenging in a first moment. Now we can do them almost blindfolded. (hmm one day i will try to do one of those blinded hehe would be fun )
The pace where quests are built is lower then the time we spend to memorize every single step of a quest/raid. Thats the real problem.
I know that creating a quest is a hard work and the devs are doing their best to create more content, but there limitations on what can be done.
Answering the OP i prefer tought quests that demand thinking, skills and brute force together![]()