An interesting point. Namespaced data would include anything related to a repo, github pages domain or organization, ie. almost everything. This would therefore

An interesting point. Namespaced data would include anything related to a repo, github pages domain or organization, ie. almost everything. This would therefore all be readily shardable. Non-namespaced are basically just user credentials and settings. However, looking forward in a post-GDPR/China data law world, "network political bloc" based sharding of user data may also be either a regulatory requirement or a worthwhile forward-looking protective measure. (We just had this conversation yesterday at Infinite Food.) One organization I believe global user data sharding goes on at already is Google.