Having done some debian packaging for work, I find watch files from debian really helpful. Changing the format to a XML compatible one does not seem like a hard work so I'll probably leave that up for others to discuss.
Since you are proposing this, a side question is: Why should we write SRC_URI in ebuilds if that info is now available in metadata.xml ? (granted that we might still want to keep over-riding this information in ebuilds) -- Gilles Dartiguelongue <e...@gentoo.org> Gentoo
