Some related info for a bug discovered today for objects. You mention 5 days ago about the ‘squareroot’ scaling. I discovered this too (without seeing your post) today, but numbers seem logarithmic I thought (100=1.0, 200=1.4, 50=0.7) (I could be wrong, could just be exponential). Furthermore, LOD is purely distance based. It has nothing to do with detail or quality. Increasing Object LOD makes the object appear bigger to the sim and based on minimum stock sizes it changes the distances it is being rendered at based on the minSize parameter (or 0 if not specified).
The bug is the way MSFS decide when to load the model, and it does that incorrect before a model is loaded with scaling transforms in the GLTF. (I have no idea if this has any effect on terrain LOD though, hard to test without known data)