Hi Bran,
Okay, if you haven't seen the video, then start with that. Christian have published three videos so far:
Apart from that I also suggest to test the latest nightly build of Papyrus-RT. What is demonstrated in those videos (including improvements already made based on feedback to these videos) is merged and now part of the latest nightly build of Papyrus-RT.
I am not fully sure how I shall interpret your feedback, i.e. whether it is a concern of what has been implemented so far, or if it is "misunderstandings" of what has been discussed (very briefly) in this mail thread, or if they are of more general concern. The concern about modifying the superclass in the context of the subclass, I would say is exactly what we already try to achieve, e.g. this about double-clicking on a composite state and either navigating to the superclass, i.e. ensure that the user performs any edit in the context of the superclass, or explicitly making the choice of redefining the composite state in the context of the subclass. Check the last of the three videos for this aspect. But maybe not even this takes care of this concern.
/Peter Cigéhn