I have the same sort of dilemma to. I add the Test Cases in the organization (folders) that I now. I then create a Test Set, linking different test cases to the Test Set. Some new test cases, some old test cases... Now come times to send out a report so the team can review the work that the tester will be doing. When creating a report on the Test Set, it just displays the title of the test case, no steps included. not much help.
But then reporting on the Test Cases, it is possible to report on the test cases by entering in a folder id number, but quite often, that folder also includes other test cases that aren't planning on executing. Its 'possible' to get what you want in this report, but very often it includes many other test cases, and it takes a lot of work to weed out the test cases you don't want to include in the report.
it would be sweet if the Test Set report could also include the test steps of each test case involved. That way, those reviewing the work that the tester will be doing would have everything included and nothing else.