This is my problem as well.. I cannot mass add test cases to multiple other cases (like call to test on multiple test cases) or multiple test cycles, so then I have to manually add the test case to hundreds of other test cases (via call to test) or test cycles. Big time sink here...
My use case was I had test cases for multiple devices. Then I had a test case with all the steps needed to test each those devices (the steps are all the same for each device). My idea was to call to test the one test case with all the steps into the test case for the device, but it ended up being a massive pain because you can't mass add test cases.
