Hi
Have you considered exposing the reader and writer classes as public? I've been tinkering with simulating a REST service so I can use FeatureLayer to get features from MXD documents where ArcGIS server is not available. Writing code to read and write json from and to the ESRI.ArcGIS.Client classes used by the featurelayer is quite time consuming. Considering the WPF Api already do the job, it would be nice to be able to use the classes.