I actually preferred that first novel of the prequel trilogy to many of the latter volumes of the main series, but I'm sure that's probably because Moiraine was one of the more interesting characters he had developed. Also, because while the main series started out strong, it got very weak in the middle.
He discussed his plans for the rest of the series with his wife, and left her his notes, so hopefully it'll be finished.
Truth to be told, I felt that Jordan created a fantastic world, but wasn't all that good at telling the story set within that world. I feel it would have been much better if, say, he had collaborated with George R R Martin, with Jordan designing the world, and Martin telling stories set in that background.