How are BCOs packaged or transferred?

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Relates a bit to #23 - how are BCOs serialized and transferred?

Is there a conventional file name for the BCO JSON? (bco.json springs to mind)

Is there a conventional path structure to contain a BCO and its sub-resources"? (e.g. data/ ? )

Are BCO sub-resources (scripts, inputs, outputs) webby or contained in some kind of package? (alternative: snapshots of the webby resources)

It has been briefly mentioned that BCOs are meant to be submitted to FDA in the form of physical hard-drives. What form does this take? (We can rule it out of scope for this spec)

Should BCO packaging reuse existing standards like bagit or Research Object?