To answer most of your post.
1. As i recall more than one member of the organization considers Ozzie the future at leadoff. Maybe I'm remembering wrong but I recall reading something. I like Ender in the 2 hole or 6 hole.
2. Mallex is excess, but Mallex has little value. The smart thing to do is trade Markakis and let Mallex play and hopefully he'll be successful and someone will trade for him then. Right now his value is pretty low.
3. Dozier is a quality player. I'm not going to put him down. But I don't think he's the missing piece. I'm fine with sniffing around guys for value, Dozier would have costed us a haul. Probably ALbies, Allard and Toussant at least.