Blizzard Entertainment announced that it will not implement the planned Team Deathmatch multiplayer mode for Diablo III. Diablo III lead game director Jay Wilson made the announcement on Battle.net. He explained why the company decided to scrap the mode:
"In continuing to develop this mode, playtest it, and put it in front of other developers within the company, we've found that it falls short of our expectations for a high-quality Blizzard experience," said Wilson.
Wilson went on to say that game depth and class balance were two of the main reasons why the company decided that the mode just wouldn't work in the game:
"Simply fighting each other with no other objectives or choices to make gets old relatively quickly. We've brought a lot of people in to try out Team Deathmatch and, while some found it entertaining, most of our testers didn't feel like it was something they'd want to do beyond a few hours. Without more varied objectives, or very lucrative rewards, few saw our current iteration as something they'd want spend a lot of time in," Wilson continued.
He went on to say that Diablo III was always designed with player v. environment as the main focus of play and that deathmatch would require a compromise on things like class abilities:
"Diablo III was designed to be a PvE-first kind of game, where we never compromised on player abilities in the name of future PvP balance. We want to be able to carry over as many of the crazy runes, items, and skills as possible, with their crazy effects, and alter them as little as possible. In a casual PvP mode, something equivalent to a WoW Battleground, this would be fine, but Team Deathmatch felt very hardcore, and it put a laser focus on class balance in a way that we didn't think would be good for the game as a whole."
Wilson did say that player v. player dueling will still be coming to Diablo III with patch 1.0.7, scheduled to be released "sometime after the new year."
You can read his whole post here.