It would be nice when I could pre-assign a SUT to a test plan. I'd like to test different systems (not only system versions) in the same project because many single test cases will be used on all the tested systems, but some are only for a single system. I could use different projects for the different systems but then i would have to create the same test cases in different projects, because the test cases are project-specific and can't be used in another project.