I would like to see the ability to de-duplicate classification metrics inside of SiteCatalyst UI and Excel plug-ins, instead of relying on Discover/Data Warehouse to do so.
This has been implemented in SiteCatalyst 15. Visits and Visitors are de-duplicated for classifications. This is great because you don't need to rely on eVars or props as much, when you're looking for a Visit or Visitor total for a group.