Major Description
I've been experimenting a bit on slimming the Exchange map down; basically, Exchange currently store a bunch of stuff that is not strictly required either because there're already direct accessors the data (Bus, Service, Endpoint, Binding, BindingOperationInfo) or because the data can be easily retrieved using stuff that's already in the map (ServiceInfo, InterfaceInfo, BindingInfo).
This is relevant because the Exchange map is copied into the Message context cache, so the slimmer it is the faster it's copied (and ofcourse we save memory).