This has probably been suggested already, but I really wish Affinity Photo could add a method of saving RAW edits using a xmp sidecar file (or other non destructive way like how Adobe Camera Raw remembers edits to dng files) so that I can re-open edited raw files a later date. An option to reset edits back to original settings of the RAW file should be included too.
The current method of having to bake edits after developing and to save as an .afphoto file is a pain, due to making another large file or having to re-edit the RAW again.