I have to disagree.
I mean, I appreciate the subtlety of the "faux" syllable, and the implication that she is false, but this is way too complicated a concept for effective branding.
"Fauxcahontas" tries to sum up the whole controversy in one elegant word. In reality, branding is more of a blunt instrument.
Disney spend a gazillion dollars inserting the name "Pocahantas" into the American lexicon. Trump is getting the advantage of all of that branding, and is not trying to teach people a new word. By going right at Warren, calling her an Indian name, he is inviting the left to accuse him of racism, which he uses as a force multiplier when he points out that Warren is the actual racist, and he is the defender of Indian heritage.
Trump is right on the money on this one. Brilliant branding, as usual. "Pocahantas" it is.
Howie Carr was calling her Fauxcahontas long before candidate Trump muckled on to it. I believe I got the idea from Carr as a guest on his show, during the primaries.
You nailed it. The time for subtlety is long gone.