I simply want to be able to build my own hammer if necessary. Microsoft - of course - does not have to build the hammer I want to use - but give me the possibil

I simply want to be able to build my own hammer if necessary. Microsoft - of course - does not have to build the hammer I want to use - but give me the possibilities to do so - in this case access to these API functions. The Javascript engine used for Metro applications (Chakra) also uses these API calls, so even Microsoft is (obviously) not able to relinquish using these API calls for writing a JIT compiler. So: I really only want to use the tools the platform offers - but in the same way Microsoft does; not in the limited way that Microsoft forces outside developers.