Proper proforma/forms integration with Insight fields

We rely heavily on referencing Insight objects in our service desk while still trying to minimise the amount of custom fields and the current solution for creating Connections with the 10mb limit on results from the REST api is rarely an option since we often have to add searchable dropdown fields with many thousands of objects in the result set.

According to the documentation an integration with Insight has been "worked on" for a few years now, any actual progress there would be highly appreciated.