Bulk deployment and Approval process in MediaBin

System

Hi,

My req. is to resize assets ( to diff sizes depending on the platform) and then go through a approval process . If approved then deploy the same to the web servers. I know we have workflows in MB which can deploy content. But can we have the same approval process as in TeamSite .i.e create groups and approver will be one member from the group.
Also can we apply various tasks to a single Workflow creating different files for different tasks? And deploy these assets in bulk ?
Please let me know !!

Regards,

Mav