How should this look

I want to start writing some APIs for STIX 2.0..  But I am not yet sure how things should look at the top level...  I am thinking something like????  This is meant to get people talking so we can start fleshing this out as cleanly and rapidly as possible.
{     type :  stix-package ,     id :  stix-package--ad3d029f-6fe7-4923-aafc-3b69aed32365 ,     indicators : [      {         type :  indicator ,         id :  indicator--3d5338a0-9305-4373-b59c-616ac2e9b18f ,         timestamp :  2016-01-28T15:44:53Z ,         title :  Some really neat indicator that we found
    }    ]  }
Thanks,
Bret
Bret Jordan CISSP
Director of Security Architecture and Standards
Office of the CTO  Blue Coat Systems
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