Meaningful substance and just a little flash!
My debate on this expansion is the fact that most new content is very cosmetic. The male blood elves bare a striking resemblance to re-skinned and re-sized female night elves, and the females? Scrawny night elf females. The new alliance race, Draenei, have elements of re-used, re-sized, re-skinned models, as well, only pieced together (like the Succubus tail/legs and tauren arms for instance). The males look rather off balance and top-heavy. Everything feels rather re-skinned and "oddly familiar" everywhere you happen to go, with strong exception to the starting areas. Honestly - it seems rather rushed to me. Very little "new" is in the game prior to reaching level 60, but, if you have the hours on hours (on hours) to dedicate yourself to attaining such a status - there is some worthwhile endgame content with the addition of a level 70 cap.
(Although - when I think of that. I can’t bother but to recall that South Park line "We don’t have accounts... we have lives.")
On the other hand - the soundtrack, in my opinion, is quite impressive. Some areas provide a fresh new sound that is quite pleasant with a set of headphones.
The graphics have remained unchanged. But there is talk in the future of such an update.
The value has been jolted back to life - if at least until the initial "aww neat!" wears off within most players.
This expansion deserves praise - yet has done nothing, again in my opinion, to revolutionize the original concept and gameplay.
If you have the $40 to burn - and have been a patient and loyal player - then by all means give it a try! :)