As all successful "firms", the RF surely tries to offer something for every group of "customers". Meghan is the one to sell the monarchy to American tourists. She is "their" princess. It wouldn't do to suddenly become the modest and demure "second class" Royal. IMHO that neckline is a tribute to the Americans who want something "special" from her in the fashion department, while through colour of her dress, simple hat and modest and respectful behaviour on the Balcony, she acts exactly like she should do. There will be some stunning and daring pics for the US-media, but all in all she payed proper respect to the queen, Camilla and Kate as her superiors in the family. I am really charmed by her.