Some bugs I came across attempting to make default PS shortcuts:
# Krita doesn't save with .shortcut appended when saving a shortcut. Krita also doesn't load a file if it's not appended with a .shortcut.
# Krita doesn't load the default properly when going from a custom shortcut file back to the defaults.
# Krita doesn't add the new shortcuts to it's list of possible shortcuts, might be related to 1.
# When exporting custom shortcuts, krita only exports a few of them, not all.
# The shortcut list is unordered in places. So we have things belonging in the view menu under the krita menu, things belonging in the krita menu under the miscelaneous menu, etc.
# The interaction tool(white pointer) is unable to have a shortcut assigned to it.