For me, its All of the Sauropods that were a part of the Carnegie Collection that were not made for the Wild Safari line.
these include there Diplodocus, Saltasaurus, Plateosaurus, Camarasaurus, and Amargasaurus
As for Modern wild life, i want to see them remake the mandrill they had
as for re issues i want that Rattle Snake from the Wild Safari line
What models do you wish to see remade/Reissued by Safari?