Tillerson represents us well. Have you seen him speak? He's knowledgable about foreign affairs, and he simply represents us well.
Mattis has been given free reign to run military operations. ISIS is basically toast already.
The media wing of the democrat party is trying to make a big deal about Trump's budget only yielding $3.3T in deficit reduction because CBO assumes 1.9% GDP growth instead of something closer to the 3% that is normal. That's on Mnuchin and others in his cabinet. They've also passed and signed budget resolutions in congress, in spite of the narrative that nothing's getting done.
Ross is leading initiatives to make our trade pacts more fair. I think you can also look at foreign investment in the US, like iPhone manufacturing plants to be built here, as his accomplishments.
Rick Perry comes across as a buffoon. Yet he seems to be really good at actual governing. He's been pushing for "energy dominance" by the US. He's cut deals to export energy to Ukraine and other nations. He's been pretty solid about backing clean coal, nuclear, and other clean energy initiatives. XL Pipeline won't hurt, either.
Carson is revising HUD regulations that direct money to rich cities like San Francisco so the cities that can better use the federal grant money get more.
Specifics.
To say Trump has made no good hires or that he has no good cabinet members is simply wrong.