One very common scenario on projects is to work with multiple SAP systems within a single wave.  In the case of my current project, we are working with ECC and CRM.  Within dspMigrate under the Console> Waves, a Wave can only be associated to a single System Type.  This limits the ability within Map to auto-build Targets dealing with multiple systems.  The work-around is to create multiple Waves for each system, but it would be nice to be able to make the System Type selection at the Object or (even better) Target level.