Congrats on finishing that monster migration!

> In order to control how queries are executed, we have built a plugin which exposes a set of custom query types. We use these query types to provide functionality and performance optimisations not available in stock Elasticsearch. For example, we have implemented wildcards within phrases, with support for executing within SpanNear queries. We optimise “*” to a match-all-query. And a whole lot of other things.

Did you port your the in-house plugins? Seems like a big blocker.