Right now? The only things making it unique are negative.

But sometime in the future, the class system, story, art direction, and cross-platform nature might pull it out of the hole its in. It certainly won't be combat and fight mechanics, because we've already made the decision of going from a terrible system to an average but passable system.

Competitiveness? They're trying to appeal to every audience now, so once the content gets fleshed out I think it will be fine in those regards. Competitive MMOs these days need to appeal to as many people as possible.