Hello!
What about the engine of Wikidata?
Do you think MediaWiki is good for structured data?
I think MediaWiki should be greatly modified at least to be proper engine for Wikidata.
The best thing would be to create new engine specially for structured data. It would be also better for Wikitionary.
Just remember what was Mediawiki created for. Storing marked up text pages. Mediawiki is good for encyclopedia but not for Wikitionary and Wikidata purposes.
Sincerely,
Soslan Khubulov