The original WoW theme was great. BC was a slightly altered version, WOTLK was an again altered version which became a cacophony of old Warcraft 3 tunes in the second half, can't even remember Cataclysm, pandaria is once again an altered version mixed with the most generic sounding chinese music known to man...
so...
How about they make something new and exciting, like this, in case it's a sea expansion with Azshara and all that?