The Miller and Wiles transition really helps illustrate what's been going on in the Trump White House.
Wiles represents the way most of the Trump folks were turning the White House into a retirement home. She was like the washed up socialite still finding her place by organizing the Bingo nights.
Miller is a Rasputin-like figure, a powerhungry sociopath with no loyalty to anyone but himself. He jumped at the timing to grab this lever of power.
It will be interesting to watch him stab Trump in the back without Trump realizing it.