I use the new DG (2020.1.3) on my 13 inch MacBook 2017 and I have 4 lines that take 105 px out of 900 screen height px total.
I would like to be able to hide:
* line with 'Services' as it is useless to me. I know that I am in the Services panel
* line with path: it would be better to move it to the line with 'Output' tab or allow to hide completely
* left toolbar: don't need it, too.
DG 2019 was more friendly to my screen space.