Feature suggestion: Graphical modeling/visualization of flows/dependencies between test cases and test suits, with verifications (if what was planned is covered by test cases, partially or completely; and other kinds of verifications).
Test cases could be associated with steps of what was planned; it would be visible the set of test cases that should be generated before an expecific test could be performed. It would give visibility for paralell execution too.
It would be a higher visualization level of the tests, a planning view.