There is a very cool asset available on the Asset Store which uses LineRenderer to make low-overhead volumetric lines -
https://assetstore.unity.com/packages/tools/particles-effects/volumetric-lines-29160It would be super cool to have an action similar to "Draw Line" but which uses this asset (or the same algorithms) to draw a volumetric line.
I was thinking of trying to adapt the existing asset myself but I'm not sure my coding skills are up to the task just yet