The impact this has from my POV is that once you could just install the source package and the sources and javadocs for your JDK then show up automatically in Eclipse which presumes that src.zip is in the same folder.
Now you require an extra step to get this useful resource (I make a softlink as suggested). Not sure if this counts as an Ubuntu problem in my case : the amd64 package is not available in the repository. But source code isn't really an architecture-dependent artefact and the previous packaging seems to make more sense in this regard.
