After seeing the pilot, there was nothing that made me think that another actress with less 'chops' than Adrianne could have done the same job. Another actress that could have the Wonder Woman / Diana look down much better than Adrianne. All Adrianne had was her height. I can live with a casting choice that even puts Diana at 5'7", as long as the look is good (actually good is too weak a word, make that great).
With Wonder Woman, you need to hit a homerun right away with casting, and then the script will hopefully be good enough to greenlight the project.