Mists of Pandaria Beta: Certain PvP maps may be blacklistable

In the latest Mists of Pandaria beta patch, Wowhead has uncovered some quite interesting new client strings that might herald a change in the way you choose which Arena or Battleground to fight in.

• ERR_PVP_BLACKLIST_CAP = "You have already blacklisted the maximum number of maps."
• ERR_PVP_MAP_NOT_FOUND = "Blacklisted map not set."

To me, this seems like an excellent idea for Arena players. There's always lots of controversy about the random damage and LoS components found on some maps (hello, Ring of Valor); this would let you avoid that entirely. Of course, that means you can no longer use it as an excuse, either -- so you may not want to reach for the blacklist too quickly. While I don't do much in Arenas, I certainly wouldn't mind a way to ensure not getting WSG three times in a row.

One concern, though, is if Blizzard allows too much blacklisting, that could make matchmaking much more difficult. A smooth matchmaking process has been one of the highlights of WoW compared to other online games, so any algorithm tweaks have to be made carefully.