I was able to read The Emperor Domitian by B.W. Jones last year that was all about what a relentless micro-manager Domitian was, especially with regards to economic manipulation of not only the Roman economy as a whole, but careful provincial management.

Domitian was not a skilled military commander, and I think he was such a micromanager of the administration as way to merely...play to his strengths. He even went so far as to name himself censor perpertuus in 85 CE (censor for life), which was an unprecedented act at the time.

I would recommend looking into that book if you're interested in a more in depth look at his economic manipulation. I don't want to get too far out of my comfort zone by talking about currency valuation, et cetera.