>> You're not making a very good case for creating a brand-new architecture by pointing out how much like existing stuff it is. <<
I am not sure what you mean here. People want GUI's for their web biz apps.
>> It's already running on everyone's desktop, and it uses existing tools without reinventing the wheel. <<
Still a variation of "why not just use Fortran or COBOL instead of another language?"
>> What you haven't answered is "how is SCGUI better than the existing tools". <<
Does JS+DOM make a decent "normal" GUI interface? I still say the need for remote GUI's is common enough to justify a dedicated protocol. JS+DOM is just a short-term wannabe WRT GUI's.