Im interested to see whether they will do this tbh. Im definitely in the boat of #SomeChanges version of Cata. Some more out of raid content, remove LFR and literally re-make DS (pipe dream) and it would be a great xpac. Mix in a few QoL features too, I always wondered why people hated Vashjir given it was one of, if not the most unique zone ever. It was confusing admittedly with the full 3d directionality of swimming and not knowing where objectives were. Id imagine they've made progress on that for dragonflight, perhaps mix in a few of those QoL things to make zones like that more palatable.
I do agree with you though, the raid tiers pre-DS were some of the best ever. The thematic parts of the xpac too like the Ancient Egyptian dungeons were super cool. Def down to do all of it again.
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Yeah this is how I feel, once DS hits, that for me was the first "this sucks" content, followed by a huge content drought as usual at the end of xpacs, and then as much as MoP was great, the legendary cloak for everyone, timegated and completely uninspiring was just crap. Thats one thing, if we do MoP, id literally rather they just completely scrapped the cloak and figured out how to adjust the difficulty/power of our characters. The whole legendaries for everyone idea to me is just complete garbage.