I cleared the dungeons in full 90 BiS from the Anabaseios raid tier. The only struggle I've experienced is watching other players fail, often resulting in a party wipe because dark knight has no self sustain. Most of these mechanics I actually nailed on the first try. The telegraphs are blatantly obvious and you have a lot more time to react than you would in savage raids.

What I think the problems are:
- I see too many players that are like 20k less max HP than what 90 BiS (Best in slot) provides you. That's a gearing problem. Stop relying on your end of expansion dungeon gear from the previous expansion. While the minimum ilvl is a joke in terms of a requirement for these dungeons, it is by no means what you SHOULD be going in at, and the difficulty really only punishes players that are heavily undergeared. Poetics gear exists. Poetics are excessively easy to farm and not weekly capped.

- Relying on the NPCs. The developers have mentioned multiple times that the players are better at the game than they are. And, you are relying on NPCs developed by the same people who say this about their game. You are not "required" to clear with the NPCs. I think it was a mistake to tie additional story elements to running the dungeons with the NPCs because of this, among other things.

- The devs not providing different levels of difficulty for the dungeons. Almost every other MMO does this with their leveling content. They either make the party stuff optional, and divert you to questing for better solo xp, or they do like Star Trek Online, where you can change the difficulty, but all the content can be done regardless of whether you are solo or in a party, and it scales accordingly.

- Being excessively lazy. This is the biggest problem I've seen. How many of you have seen this? An orange ground indicator for a large AoE pops up, and it doesn't resolve for 10-15 seconds, but you still see a player just be willingly ignorant and stand in it. Yeah, that's the level of lazy I'm talking about here. It was okay in ARR as a new player. You are not a new player anymore if you have reached Dawntrail from level 1 in ARR without buying story/level skips. Which brings me to my final point.

- Story/level skips. I understand why these are an option. But, I think they hurt the leveling experience for those who actually work their way up from level 1. It's entirely possible to solo queue into a current expansion dungeon and see all 3 other players not know what half their kit does because they bought one of these to "catch up" to their friends, or whatever their reasoning is.