Drilldown Choropleth issues

The Mapbox solution is not an option for us as it would involve significant fees as most of our work is in Power BI Embedded. The drill down Chicklet slicer has significant potential to work the way that we want but needs some further work. 

We work with Esri and if they put more development effort into their visual has significant potential. However, at the moment it works with Australian geographies that are two years out of date, is slow and can not be used for Power BI Embedded to be able to show our Esri map layers. This could be a good solution for us but seems to get very limited development focus. 

Mapping is something that we desperately need in Power BI but to date, all the potential solutions are falling short.