I can see why people like using Arch Linux for the flexibility of using AUR to keep specific software updated.

Aside from adding additional software sources to apt, only sometimes provided, is it manageable with Debian and derivatives.

Looking for a source for the latest Inkscape and the launchpad PPA doesn't seem to work with Debian, there are signature issues and looks unsigned.

Perhaps including unstable and testing in the sources will include a much more recent version (however it's not application specific).