Omarosa will be the one who takes down Trump. He finally has a nemesis as shameless and willing to lie as he is.
Her flaw though is that nobody likes her and trusts her, she's based her entire career about being a snake. She'll also fight to the death to everyone's detriment over credit for anything good. Even without her reputation she can't help but immediately fall into this.
When Trump brought her back on
The Apprentice yet again, she said she was turning over a new leaf due to
killing Michael Clarke Duncan's death and was only there to win one for him. Within fifteen minutes she already started an argument with half the entire women's team over something meaningless and by the time the task had started she was already trying to "secretly" undermine people while insulting them to their face.
I have to assume this behavior and personality along with her lack of qualifications for anything is why they kept moving her to increasingly obscure White House positions after originally being an all-purpose "Assistant to the President" and that she continued to worm her way into and create problems in areas she shouldn't have been near which is why Kelly finally had to tell Trump to deal with it and man up to dump her rather than letting her hang around fucking with everything.
I'm no expert but it potentially seems like one problem with hiring people simply because "they look good" on TV/
Fox and Friends/etc. Although The Mooch is likely the exception that proves the rule.