While creating new test steps to be utilized in a Call to Test feature you are able to minimize the test steps as seen below:
However, when you're going through the test player to execute the test case, the call to test steps are listed out without a way to minimize just the steps of the call to test. The call to test steps aren't even displayed differently than the steps of the test case that it is embedded in. It would be really nice to be able to have the call to test steps minimized like in the screenshot attached.