It would be useful, however, for those of us with older versions of Knoppix.

For example, the latest version of Branden's experimental XFree86 debs is 4.2.1-6. Knoppix 3.2 has XFree86 4.3.0, doesn't it? It'd be nice to get my hands on the new XFree86 packages, without having to download a whole new ISO image and copy them across manually. An apt source would be wonderful.