[Heales]

With their game being in alpha everything can happen, and looking at Blizzard's track record they've had a tendency to release highly playable games that catered to the player.

In the alpha process new stuff can be added and removed. Things can be changed completely etc. etc.

When a game is entering beta the tuning starts. Early in a beta things might still change, but normally all the important design issues will be resolved in the alpha stage.

So far it looks to me as Blizzard has been taking elements from all over the place in an attempt to really make a true next gen MMORPG. Some people have been blaming Blizzard for "stealing" ideas from older games. The truth is that no good idea is too good to not be used again.