In the editor, under Change brightness over time, would it be possible to show where each slider is? It could just be a label when you grab one of the sliders that shows the percentage or fraction of the lifetime?
Another thing I would like at some point is a measuring tool in the 3D World Editor. I often use an image from google maps as an overlay on the ground. This makes it much easier to set up fronts that aren’t lines. Just having a simple tape measure in the editor would make it easier to set the scale correctly.