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 suggesting this idea for years. It would be really helpful! Adobe hear us please! When you have a lot of layers project become hard to organize (keep clear) and precomps and quite drastical change which creates new comp (make project panel less organize), break all scripts etc. please give us GROUPS!
Let us group objects, groups are not nessesary to be interactive, if that's impossible for some reason, but navigating in composition is a real pain when you have 30+ layers