Timeline folders. We have them in Animate, Photoshop, Illustrator... precomps can utterly ruin your work and is NOT an alternatives to having a simple folder hierarchy - especially when dealing with shape layers or anything that requires continual rasterization.
I'm sorry Dacia, but Essential Properties doesn't help AT ALL. There's nothing to do with what we're asking here. We just want to be able to organize layers in a easier way without having to have a million precomps to navigate. Just like Photoshop.
This would be the single biggest thing that could be done to improve my experience of using After Effects.
I'm sure it would be the same for a lot of people, especially neuro-divergent folks with ADHD etc. Having things buried in precomps heavily increases the mental burden of using the software.