And considering how VB.NET was incorporated first-class besides C#, Roslyn seems rather ahead of its time, with both language abstraction at the compiler level

And considering how VB.NET was incorporated first-class besides C#, Roslyn seems rather ahead of its time, with both language abstraction at the compiler level and language-agnostic analysers based on semantic info. I still can't get over the awesomeness of being able to just throw together a fully supported custom analyser from a template—unique to Roslyn to this day, AFAIK.