We need use line and trail on UI/2D.why not show SortLayer/Order property like Particle System’s Renderer.
In Fact ,I need adjust Mesh Renderer’s SortLayer/Order personal. And I have to create a custom script to do this. It will be more convenient if all of Renderer can adjust SorLayer/Order .
BTW, can we have a property to stop trail from emit.just like particle,so we can do some effect like fade out or something others…