Execution packages based on schema

For one of my client's there is authorization based on schema's that are created in the database. We also want to executed based on those schema's Now we either have to manually add all the tables to an execution packages. Or create a project perspective for that schema and then execute that execution packages. and create a different project perspective for the models that we are creating. So it would be very helpfull to be able to selecte the schema's you want to execute from a Data Warehouse in the execution packages.