Cyrus C.
Veteran
As for the method, I can't really say anything that hasn't been said already. It's interesting, but as a beginners method, it wouldn't be very good as you can't really use it to step into any commonly used method (besides waterman).
Last edges -> transition to Roux?
I'm not sure but I think Roux and Waterman can transition from this method.
With Roux, I think the main thing beginners have trouble with is the F2B (I barely know anything about learning Roux, but this is what my friend told me). This method doesn't do any blockbuilding. Although I guess you're right in saying that it could help in a transition to any LE method.