People who come to watch Wonder Woman want to see the Wonder Woman they are familiar with.
If she does appear in the JL movie, it'll be her first major public exposure in nearly forty years
, and whatever origins/everday SOP the Carter TV series gave her are so obscure and forgotten even I
haven't really gleaned them via cultural osmosis..
I mostly agree regarding live-action, but I figure that generations of SUPER FRIENDS and JUSTICE LEAGUE cartoons have probably helped keep her in the public consciousness to some degree, especially since a lot of the people who watched those shows as kids are old enough to buy tickets (or choose the TV channel) now.