I am seeing a lot of talk on the forums about aspects of vanilla, BC, WOTLK, etc that made one expansion better than the other.
What I would like to know is, Features aside, how much does the overall theme of the expansion affect your opinion of the game?
For example:
BC: Legion themed, features aside, how much did the expansion being legion themed affect you loving, hating or just feeling meh towards the expansion?
Thoughts on the impact of the overall theme of an expansion would be appreciated as well, compare and contrast all of the expansions with your overall experience - how much did the theme really make or break the game in your eyes?