Individual bouding volume for each instance? (3DTiles)

1. A concise explanation of the problem you're experiencing.

It's pretty simple, really:
I'm working with Cesium3DTiles and I have a huge amount of instances. Now I can give each child in the Tilesetjson their own bounding volume, but I wondered if there was any way to only show each instance when zoomed in close enough individually.

2. A minimal code example. If you've found a bug, this helps us reproduce and repair it.

Right now I can’t think of a way to do this.

At some point we might expose the instance’s position, maybe as a property in the styling language.

I opened an issue with some ideas: https://github.com/AnalyticalGraphicsInc/3d-tiles/issues/292

But in the meantime I would suggest tweaking your bounding volumes and geometric errors to reduce the number of instances drawn.