I don't like Hazard going to Chelsea... I mean it's not even clear who their manager will be next season. If a club signs a player that still needs to develop, the player needs a coach who has patience and believes in the players abilities. Also now they want more titles at Chelsea, so the new coach has to win games without any long term concerns.
Therefore it would have been much better for Hazard to go to Arsenal. They might not win titles there, but the chances to win a (big) title with Chelsea aren't much greater to be honest.