The advantages within the platinum edition are office management related. Specifically:
Manually Assign Agents to Leads in Lead Management
Carbon Copy Email Address, Price Based Lead Routing, Add New Agents, Agent IDs, Automatically Selected by Office ID, Branded Agent Login, Custom Office Pages, Show Agent List, Assign Agents to an Office, Agent Manager and Import, Roster Layout Manager, Agent/Office Details, Export and Saved Reports, Round Robin + Core Fields Lead Routing ,Assign, Saved Links to Specific Agents , Individual Bio Page Wrappers and a few more things.
These features apply to team and broker office subscriptions. It's a fine service.