Feature Request

I have a request for a future feature.  We have several tables in our database with spatial columns.  Our application is on Silverlight, so we've modified our .tt file to ignore these columns during code generation.  However, these columns are still defined in the .edmx file so the model throws an exception on initialization that required properties cannot be found.  So what we have to do is to manually delete these columns every time we update the model.  We're currently writing a batch file to read through the XML in the .edmx to remove the columns after we do an update, but this is still an additional step we would prefer to avoid. 
What would be nice is to be able to see the changes in the Update Wizard and to be able to choose to ignore certain columns in tables.  I've seen other edmx add-in's that even maintain an "ignore list" so we wouldn't have to choose to ignore these same columns every time we update the model.