>> Identify ONE real-world application that's actually out there that would be heaps better if it was re-written in SCGUI. <<
Since I deal with custom applications, I don't think I could name one that anybody has seen.
Look at this way. Look at your favorite typical client-server biz application made with VB, Powerbuiler, Delphi, etc.
Do you think they would be more usable if they were an HTML app or an HTML+JS+DOM app instead of the way they are? (Assuming you don't pick one that sucks because the designers are idiots.)