Large-scale forest and vegetation scattering Procedural city generation High-density debris / rock systems Poisson distribution can give you a nice look, but when it comes to various point radius, it doesn't work well. If you set the minimum distance too low, then there will be too many overlaps. If you set it too high, then the instance packing is too sparse. There is no way to balance non-overlap and tight packing. But with the power of self pruning node, you can achieve it!

Yes. It is not a replacement for scattering systems but a post-processing optimization layer. So you can apply it to any other scatter system you are using.