Release Unity Player as open-source?

Some times very nasty bugs appear in my projects which are very hard (or impossible) to track without having a source code of the Unity Player. Whether they are my bugs or Unity bugs.

The Editor could stay closed and proprietary but player could be opened. Both, game developers and Unity itself would benefit from this. Bugs would be detected and fixed much faster.

Though currently Unity tries hard to evaluate all the submitted bugs, it still takes months to wait for an answer. Right now I am waiting for evaluation of 2 bug reports which are critical to my project and I am not sure that I will get an answer before deadline.

Why not purchase the source code to Unity? That way you can do your own debugging.