I don't see how these trees are providing a privacy screen. Have you thought about a trellis with a vine that thrives in your climate?

A water feature/fountain?

If you can install a cable system on the block wall you’d get a more organic green wall which could layer behind the thriving arborvitae in addition to the bare spot

The trees are so skinny do they really provide any screening?

Eventually in 3 years maybe. in my previous home which was also a brand new built, I planted 19 of these cypress and they provided a beautiful living wall to shield the neighbor's 2 story house. So I thought I will repeat my success. But this time it doesnt work out as planned.