My take-away is this:
- There's no nice way to version the ShEx schemas.
- It's still very early and people are trying to figure out what they want to make schemas for.
- You can have multiple schemas that apply to the same item and roughly are trying to do the same thing built by different "WikiProjects" to manage different concerns. E.g. there is no master schema for "Human".
- There is a proposal to implement some mappings, but they are currently only focused on mapping using "Instance-of" and "Subclass-of" properties. So you wouldn't be able to map on, say, "Occupation".