First of all, I'm lucky I found this tool :) Well done!

I'm trying to find a way to align the PIP window at the top border of the display. Centering it would be even better. The command I'm currently using is the follow:

betterdisplaycli set -pip -height=0.4 -originx=0.3 -originy=0.443

But the values for originx and originy are handcrafted, and wouldn't work whenever I'm using another display. It would help if I could either pass a negative number to originy, so that it starts from the top, or – even better – some new properties like alignx and aligny.