I don't know, he seems like Ozzie Lite in that he will be wanting his teams to bunt and steal a ton, which is a horrible idea when your best base-stealer is Juan fucking Pierre and your predecessor has not demonstrated the intelligence necessary to properly determine when to bunt.
If Hahn were sticking around, I would say get anybody that would listen to him, but it sadly appears that he is not, so I really don't know. We could be seeing just more of the same bad managerial tactics but from someone else. Ugh.