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It is not at all clear that that would
be even relevant if one wanted to build the kind of all
encompassing IdPs envisaged in the ideas charter/draft.
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What kind of all encompassing IdPs is being referred to above? The charter does not propose to build such an all encompassing system.
The charter refers to a mapping system for Id/Loc protocols. The data is routing information. It may have some limited information if useful for routing purposes - such as the list of locators, groupings and so on.
Today, routing information of this nature in mapping systems is not hidden. All nodes in ID/Loc protocols typically access this information for encapsulation, translation or forwarding decisions without any restrictions (within their instance/scope).
One of the goals is to be able to authenticate and have access-control on the lookups if so desired. This functionality should enhance privacy on revealing locators of nodes.
For example, you may want to advertise the location of some of your mobile IoT nodes in a factory on a need to know basis. The solution proposed here is one of them.
To address your concerns: no all encompassing system, or humans involved here.
Padma