Do you also plan on talking with the Mozilla people? And with Apple? Or will this be a kind of big daddy Google knows what's best for you, ads included?
i have told my chrome team contacts about bugs in other browsers (e.g. safari not properly updating completion results when datalist elements are replaced asynchronously) and they have communicated these issues to those teams and gotten them fixed
if anyone reading this from other browser teams is interested in getting in contact w/me they can email me at carson at bigsky dot software