Recently, I saw the DVD of Mary Poppins (Emily Blunt). So this remake was pleasant, but I honestly thought it lacked the heart and soul of the original.
I think Julie Andrews just had this innate "sparkle" that shone through, even when she'd state the rules to the children to be obedient. She was effective in getting her point across, but always in a quite charming way (both to children and adults).
Emily Blunt played the role a bit less warmly. (This may have been what the director wanted, to give the remake a slightly different spin, and not a carbon copy of the original.) Loved the costume design.
Overall: Mary Poppins (original) - 100%
Remake of Mary Poppins - 75%