Re: How Atlantis SHOULD have been..
SG-1 never explored anyone's mythology in a real sense. They used some window-dressing elements like names, pyramids, etc, but it was all too generic to have any real substance.
The point was to de-mystify the ancient mythologies not to affirm them.
The greatest science fiction series of all time is
Doctor Who! And I'll take you all on, one-by-one
or all in a bunch to back it up!"
--- Harlan Ellison, from his introduction
to the PINNACLE series of Doctor Who books