Sql authentication, AD groups, and Default Schema

I want to setup all database access using AD groups. A Management Studio snapshot:

<Sql Server>

  Databases

       Test1

            Security

                  Test1 Sql Account

                  Test1 AD Users group

       Test2

            Security

                  Test2 Sql Account

                  Test2 AD Users group

  Security

       Logins

            Test1 AD Users group

            Test2 AD Users group

The problem is that I can’t assign a default schema to an AD group so it looks like I still need to assign our developers, one at a time, to each database where they need access. (!) Is there a workaround for this problem?

I believe that this is true for Sql 2008. Is it also true for Sql 2008 R2 and Sql 2012?

TIA,

P.S. I understand that developers should be coding the schema name in their stored procs, etc…… it’s just that we have 10+ years of code where no one did that and we need to accommodate it. (Only recently have we started using non “dbo” schemas)