There is an updated version of totem (0.101), it depends on nautilus-cd-burner >= 2.9.0 which isn't in portage at the moment. Reproducible: Always Steps to Reproduce: 1. 2. 3.
there you got your reason why it hasn't been added.
needs gnome 2.10
have an ebuild and patches already been made for this new version ? 'cause 0.100 will not compile against nautilus-cd-burner-2.10.0