Mercedes have seen numerous key figures join Ferrari in recent times. Most notably, of course, seven-time world champion Lewis Hamilton is headed to the Italian team for 2025. But there has also been movement behind the scenes. This week, Ferrari announced that Loic Serra had joined from the Brackley outfit as head of chassis performance and engineering. Meanwhile, Jerome D’Ambrosio has made the same move to take up the post of deputy team principal under Fred Vasseur. Former F1 driver D’Ambrosio had looked like a potential successor to Toto Wolff. And the exodus to Maranello might not stop th…