The future of Hussy.Net is to simply continue compacting features of the .NET ecosystem in order to give .NET developers a chance to compete in golfing competitions.
Primitive support was previously being established with custom data types in an effort to improve handling for implicit conversions between primitives, handle truthy/falsey values with fewer characters, and a few other features. With the announcement of extension everything, native primitive support is being abandoned in favor of a consistent delivery mechanism for all features.