Blowing their load early by killing Arthas almost 10 years ago was the single largest mistake in WoW lore. No one fucking cares about deathwing, pandas and alternate dimensions. Prove me wrong.
https://www.youtube.com/watch?v=95vcgv-pK_4
their biggest mistake was thinking they can tell a story in an mmo setting while having fifth rate writers.
only reason vanilla-wotlk was viable is the story. if you had warcraft 4 or warcraft 3 expansion about deathwing you would care about him showing up in wow. you can tell a personal story that way