Think the trio of Hazard-Oscar-Schurrle works better than Hazard-Oscar-Willian. Not saying this because Willian hasn't done anything productive in the attacking third in recent times but it offers us something different, a variety of threat if we go with the former rather than the latter trio. Schurrle is a direct player, one that is mainly about movement and is always looking to get in behind oppositions' defence and these attributes complement the likes of Hazard, Oscar who likes to get on the ball - a ball hogger if you like - and create things from there. They create chances, Schurrle finishes them. That way, we won't have to just rely on our STs to score given they blow hot and cold generally. When we go with the Hazard-Oscar-Willian trio, we don't really often get enough penetration. All 3 like to get on the ball and doesn't offer that direct, penetrative runs, option like Schurrle does.