I thought that Marco Rubio and Michael Waltz were terrible picks for their present positions, because that same ilk - Pompeo and Bolton - had sabotaged Trump in his first administration.
In retrospect, they were fantastic picks. It appears to me that they are helping Trump execute his policies and not theirs. I'm not persuaded by "trust Trump" or "trust the plan", considering that people who say that now bash people who wrongly trusted Trump and praised Chris Wray when he was appointed.
So I was wrong, and I really hope I continue to be wrong.
Rubio was one of the best picks tbh. A lot of them are a lot worse, but Rubio was always a solid foreign policy guy.
In terms of experience, or policy?
He looked like just another neocon to me (I don't care about the 2016 primary, I had TDS at the time), wanting regime change everywhere and being pro-Ukraine.
Experience, and he's been anti China for a long time.
I don't think he comes up with the best ideas on his own, but he's very deep in it in general so that knowledge is super important.