The "Guide to Best Practices for Georeferencing" (roughly 100 pages) can be found among the GBIF Training Manuals at http://www.gbif.org/participation/training/resources/gbif-training-manuals/.
Here I will confess the crime of ignorance. I'm still trying to understand the need for and uses of a number of the Darwin Core dcterms:Location class terms. I guess I need to spend some more time reading the Guide to Best Practices for Georeferencing (I was going to include the link here, but the link at http://www.biogeomancer.org/library.html is broken).
Sure -- but we can't really ignore the massive numbers of non-georeferenced datapointn that already exist. And even when they are georeferenced, we'll still want to keep the original location descriptors.