Originally Posted by
Redversion
While balance is an issue, I do not think it is an enormous one. For example, if you look at fighting games not all characters in those are viable. An example would be Super Smash Bros. Melee where you have a huge roster available, but more than half the characters are not seen as "tier 1."
The biggest wall that World of Warcraft faces in the eSport scene is that you need to play WoW to understand what is going on, and even then not everyone that plays WoW knows what is going on. There are many spells in WoW and they keep adding more. Also, arenas are very spontaneous. Random kills happen, and it's very anti-climatic to be watching a game and suddenly a player dies that the commentators were not even watching.