One of the complaints about Debian stable releases is that they reach End Of Life too early (~3 years). This can result in some people choosing commercially-backed alternatives like Ubuntu and Red Hat, for they don't want to be bothered to have to upgrade that frequently (not everyone cares for the latest things, and it's not always practical to do OS upgrades). That's why the Debian LTS (Long Term Support) project, which extends the life of a stable release to 5 years, excites me.
It's also super-nice that contributing to it financially is made damn easy, thanks to Freexian, a company run by a great Debian Developer, Raphaël Hertzog. The project is now a few months old, and has achieved moderate success (latest status report).