Organized Animations

It would be good if we could have Timelines. Like… If I use a Timeline, all the objects have it’s own animations for this specific Timeline. It would work with Copy Scenes too. I can’t find any purpose on existent Copy Scenes. It would be simple if we have a Copy Scene with a different Timeline, so this one would work like a different Scene and would use all the same data instead of a Full Copy. We would be asked if we want a different Timeline or use the same while creating a New Scene.
Another suggestion is to have a Lock to whether Action Editor, Shape Key Editor for specific Object, Armature, etc. For Example, every time I need to Change between Action Editor, and Shape Editor while animating Armature and expressions of a character (mesh) on Shape Key Editor.