From all thread that asking content (hardcore vs casual) : sum up objectiveto SE

[Alise]

In a quick responsive battle, strategy does not matter, it come down to how quick players respond and dodging/counter attack. It seem to be the only type I could think of now for an A.I. to be challenge to players no matter bluegart release strategy or not.

Yes, I knew that until server respond quicker. (2.0) they could not do that kind of quick battle. So it is up to SE on how would they design type of content that is:
-challenge
-short time to win
-hard to learn.
-rely more skill, less strategy. (because youtube always ruin strategy part quickly)

To make best MMO that favor casual and hardcore,
They need brainstorming.