I would like to be able to right click on a track in the Timeline panel and choose "Add..." and then under a sub-menu choose between for example "Adjustment Layer", "Essential graphics", and "Color Matte", basically everything that's available under the New-menu in the Projects panel, and everything that I would want to add in my timeline without having to first create it in the projects panel and then drag and srop it onto the timeline. Just a simple right click and add (at the frame where I clicked).