I thought I would give you an overview of the workspace mapping improvements which Brian Harry mentioned in his TFS roadmap post. Please do keep in mind that any of this might change / be removed before Orcas ships - so there are no guarantees.
History: In DevDiv our branches are enormous , a developer typically maps only portions of the tree they need to work on. Upon analysis we determined an average workspace had 100+ mappings. To reduce the performance and maintenance overhead of a large number of mappings we are introducing the following features.
1. Mappings under Cloaks
This will allow you to cloak a top level folder and map individual folders beneath it.
e.g. Cloak $/proj/privatedirs
Map $/proj/privatedirs/johndoe d:\dd\privatedirs\johndoe
2. One Level Mappings
This will allow you to map all immediate child items of a folder (any sub folders & items will not be mapped locally)
A one level mapping, will end up getting only the items under $/proj/dir (i.e. file1.txt, file2.txt, dir2 will be created - but no items below it will be downloaded)
Map $/proj/dir/* d:\dd\dir
These features will allow for more complex workspace definition, and allow users to cloak out larger portions of the tree they do not need (improving get performance)