Sorry if it is not the right place for this suggestion. During Wikimania 2016 we discussed about links between Wiktionary and Wikisource, and we reach a solution to tide them up. Well, in VisualEditor it is already possible to include media from Commons. So, may it be possible to include similarly Sentences from Wikiquote or Wikisource? I mean: you click on Insert citations put a word and tick languages and it request x project to give sentences that include the requested word.
It may be of some use for Wikipedia, but very useful for Wiktionary as definition came with attestation. If this tool can also format the references, it may permit to insert a sentence that contain a specific word in less than a second! Such an improvement!
I have no idea on how difficult it can be to develop that, but there is a need for it, and we can organize a vote to prove that if needed. I'll be happy to explain more precisely if my English is too cryptic, so feel free to react in any way.