Have you ever been thinking about how you could contribute to Gentoo? Here's a quick and easy way. If you are using stable, take a look at your package.keywords file and file stable request bugs for all the entries there that satisfy the requirements for being marked stable. Meaning there are no open regressions in http://bugs.gentoo.org and the ebuild has been in the tree for at least a month. Even better is if you make filing these bugs a regular habit. I would imagine that most developers are running ~arch so packages that are not that actively maintained might start to fall behind in stable.