The thing is if they DO want to remake the film now, then neither Julie Andrews nor Audrey Hepburn is available any more.
Personally I'm not convinced a re-make should be done but, if it is done, then the role of Eliza should definitely go to a British actress and at least she IS British.
What worries me most about this proposed remake is not so much the choice of star but the fact that they propose to muck around with the original script and original story of "Pygmalion" and bring it all "up to date" and set it in the 21st century. I hate that sort of thing.
I hate it when they set Shakespearean plays in modern times too - it just doesn't work.