Mops dungeons we weren't that good because they were too easy. WoD dungeons are less linear and are harder.
Your server may be dead but raidings as good as it ever was. Boss mechanics I should say.
I will agree that professions are watered down, and I do wish they would overhaul them.
Guilds are the same as always. There were always guilds that would spam invite you like that. Guild leveling in WoD is being removed so all guilds will be on equal footing.