i don't think there would be any point in something like this... the xop system offers a standardized system, if you want more controls over who can do what there s always the levels system.
i honestly don't see why anyone would put his free time in writing something as specific as this because except you i doubt many people would be interested in this... the objective just doesn't compare to the effort required imho... certainly not considering there s a far easier solution (xop)...