Great idea for specialized kernels where performance is critical. Poor idea for mundane glue code, needlessly slowing down reading/writing code with trivial detail. In practice, at least 95% of the code out there is quite mundane.

Python got it mostly right, though a language with a smoother transition between 'manual memory managed kernels' and 'general purpose glue' is still missing.

Rust has a great type system and handles manual memory management remarkably well. Sadly, it is missing the garbage-collected yin to complement its manually managed yang.