I just started sketching a simple PCB for LEDs with integrated drivers, it has large unused spaces and being lightweight is important, so I was considering milling holes in the middle of these empty spaces. Would these cause any unwanted loops or noise problems? Max current would be 60mA per LED and 16 LEDs per board.

Traces positions/width were just to start the sketch and are not final.

![teal is milling](https://i.stack.imgur.com/yWiO7.png)