2009-10-23 07:40:50: Created issue 'ARIA roles added to the a element should be conforming in HTML5' nickname owned by Steve Faulkner on product HTML 5 spec, description 'escalated from http://www.w3.org/Bugs/Public/show_bug.cgi?id=8000
Currently the a element is defined in the HTML5 specification as an element that cannot have its native role overriden by ARIA roles 
The reasons for creating ARIA centered around the inability of the HTML specification to address how author would create content. In fact, with the exception of forms, it was assumed that HTML would only be used for documents. Clearly, that was a miscalculation.
It is essential that authors be given the tools to produce accessible applications. The perception, by some, is that ARIA is meant to circumvent the semantics of the host language, but rather it is the author that is circumventing the host language to create UI controls that satisfy their needs. WAI-ARIA simply provides the semantics to make them interoperabile with assistive technologies.
non-public [Steve Faulkner]