I frequently use Pixelmator Pro to make ad hoc and or ephemeral edits to images. It would be neat to have a single keyboard shortcut to copy the entire raster into the clipboard as PNG. This would effectively be the same as Merge All, Select All, then Copy, which I already do.
While incredibly minor, reducing three steps to just one would be a major improvement to my workflow and an excellent quality of life improvement. I've used this type of feature in other image editors (GNU IMP, Affinity Photo, and maybe even Photoshop) and found it to be invaluable—I create a new image from clipboard, do any required edits, and then "copy visible".