Although, this suggestion is kind of close to Hasting's implementation plan of having separate compilations for GIL and GILless python, so that the default Pyth

Although, this suggestion is kind of close to Hasting's implementation plan of having separate compilations for GIL and GILless python, so that the default Python with a GIL continues to be the norm in most cases, but a GILless python with extensions taking advantage of true threaded parallelism is available as a 'high-performance' python for scientists and number crunchers and such.