Honestly I'm not really seeing the monumental loss people keep talking about when it comes to dungeons atleast with deep dungeons you can complain it's not here this expac (but I recall seeing an interview quote where Yoshi mentioned that he had the team look over the system and release it earlier in 6.0 I'll see if I can find it) but for normal side dungeons were they really anything but extra set dressing for tomestone capping in expert roulette? Most people I see complain about that mention that being the case. Hard mode dungeons included I say, despite the extra lore they provided. While certain classes are alot more simple, and some definitely worse for it, I wouldn't say it negatively impacted every class.

Relics are a whole other topic but they've always been difficult to get so this expac has been outlier up till now. Which aside from implementation which I can agree isn't great and will need hotfixes to patch the droprate of new memories somewhat. I hear the newcomer argument aswell, but I don't feel like it's widen the divide anymore than there already was, there are plenty of people myself included who haven't cleared anything higher than EX difficulty, if a player doesn't engage in a content type they won't SE can't change that no matter how much they want to. The HM dungeons or DD wouldn't make me a better player no matter how much I might want them to