Isn't that because at 4.4 we had an iLvl increase so people were a bit more wonky gear wise, while up until Ghymlit we have decently geared up in between?

I don't care about difficulty in dungeons overall, I don't mind a bit of challenge here and there. I'm more into making dungeons less boring. Ghymlit is ok because the setting is quite impressive, avec the NPC wandering around kind of make it fun (although I'm not sure I'll be saying this in a few months).
The burn is still a bit tight for some players, so healing there makes it not brain dead.

But I hate dungeons like the Swallow's Compass where everything seems endless, even with good DPS.