As an author of the vector tile specification it is really exciting to see how many different things people can do with the format. People are using data in ways that constantly amaze myself and others. There is an ever growing number of tools that have been built around the format and the future seems bright. I really enjoyed your map, great job!
I wish there was more stuff happening outside of the Node ecosystem. It feels like everything around vector tiles is written in Node these days; the only exception I can think of off the top of my head is TileServer-PHP.
And Node can be painful to work with on some platforms and in some circumstances, not to mention that JS is not everyone's favorite PL.
There are a lot of things being written outside of Node currently [1]. However, a large number of the tools are in node, primarily because lots of people at Mapbox are using Node. However, most of these are backed by C++ libraries so the potential is there for lots of porting to different languages, other people simply need to build against them. Some of the non-Mapbox libraries are not as up to date with the specification, but they are getting much better!