Nested locations

We have recently enabled locations and are currently re-arranging our hosts
a bit based on that. Was wondering about how useful are nested locations.
running node.rb after assigning a host to a nested location, we see the
location tag has just the name of the child location. The location title
tag appears to have the proper info. we have servers on serveral DC and at
each DC we have groups of servers that do not have public network traffic.
We have different mirrors at each DC for that. We were going to use nested
locations to manage that but then realized the location tag doesn't have
any info hat shows the parent location