I became quite frustrated with the workflow that Unity has for light probes, so I made a script that uses NavMesh’s vertices to place light probes for you. It even merges probes that are close together into a single probe to improve performance.
The script is available in its GitHub repo GitHub - gampixi/auto-light-probes: An automatic light probe placement script for Unity that uses the Navmesh for approximating light probe positions. and pull requests are welcome.
Here is a video demonstrating the use of it:
