At T124569#2383805, @brion broke down @Yurik 's proposal into two questions:
1. technical questions (data types, use as 'aggregation layer' for data from wikidata)
2. the hosting question (which wiki to put it on, or whether to give it its own)
#ArchCom agreed to explore the first question in the #ArchCom-RFC meeting on 2016-06-15 (Event: E213). The log of this meeting can be found at P3254.
This task is intended to cover the technical aspects of the proposal expressed in these tasks, which seem to be in-scope to arrive at consensus using the #ArchCom-RFC process.
The proposal is expressed in this document: