I'd love to be able to paste raster graphics directly into AE. It should just make a new footage element and save it to disk. There are so many cases where you need to bring in a ref image, a screenshot, something from an email, a style guide, etc.
Having to launch photoshop, create a new file, paste it in, go through the PITA photoshop save dialogs, say you want to save it locally and not on adobe cloud, navigate to the file, import it, then add it to your comp is a lot of steps/insanity that should be automated.