Actually in all honesty the problem is the concept

Many players think mmos is a vertical progression....when reality its impossible to do as a whole lets do a simple example

Alot of complaints always have to do with "difficulty" of the game so here is the example

Make a easy raid in patch 1.0
Make a medium raid in patch 1.5
Make a hard raid in patch 2.0
Make a very hard raid in patch 2.5
Make a extreamly hard raid in pat h 3.0
Make a impossible raid in 3.5

Each step which is taken to make things difficult will make players drop out because they cannot pass the difficulty scale of this imagined vertical progression....savage already shows this due to ALOT of players using mods to clear content

This is the flaw of mmos as a whole and all mmos start to die out after the 10 year mark because the progression ends up being a horizontal progression because the game gets stuck in a trance of repeating the same formular over and over and over again that the players themselves end up being bored due to playing for a VERY long time

A metaphor
"There is only so many ways you can decorate a box room, before you run out of ideas"

The game is just old...and i DO believe mmos as a whole should have a "cut off point" and move onto another mmorpg which lasts the next 10 years and cut that one off

In my eyes mmos will be much much more healthier if they all just have a 10 year worth of content...all models is Buy to play, not subscribed based, once the mmo finishes its core story...it should stop and recreate a new mmo with a totally different story to the mmo they crafted before hand

But they dont and every mmo to existance try very hard to milk its playerbase and try to survive for what? Money