SCXML compiler: qt mode was removed

I noticed that "qt mode" was removed from scxml compiler. Could somebody from the development team expain why? What would the reason/advantage to use compiled state machines if the qt mode does not exsists. For the main advantage to have slots for posting events and having dedicated signals for state changes. Without that I do not see a real advantage of using a compiled state machine over using dynamic loaded state machines. The API is in both cases the same. Will something similar than the qt mode reintroduced in a future version?