Am I wrong?

Not really. The fact is that we won't update to Lucene 6 until HS 6. So we won't be able to translate a lot of queries until then. That's not really our choice.

Personally, I still think it might be interesting to keep - and complete - ToElasticsearch.fromLuceneQuery for migrating quickly an app from HS-Lucene to HS-Elasticsearch. Not having to migrate all the (not so) specific Lucene queries would be nice. It won't be perfect but could allow to migrate quickly in most cases.