The idea is not new. But Opacity in Labels.lua is broken and many don't realize there is workaround.
This Labels file is adjusted to be subtle enhancement to visibility.
Install: Extract to DCS Main install path or use mod manager. Must choose Dots only labels in game.
I have included comments in the file for further adjustment per your preference. Search for Taz1004.
Dot size will depend on your screen resolution and can be adjusted with font size in line 60
Recommend font size of 3 or 4 for VR. 8 for 4K monitor.