Introduce a shy (like in AE) option in the timeline layer stack to focus on specific layers.
In some cases it would be nice to be able to work on just one visible layer in the timeline. A shy option like in After Effects would help you decide what layers should be active in a certain moment.
Robb Clayton commented
Yes - this would be helpful. I though I could just use the search function to choose a specific character by name but that doesn't show the puppets behaviors. Maybe there's a work around that I'm not thinking about but being able to shy layers in the timeline like AE would be great.