[Keyboard shortcuts] Access opacity shortcuts in keyboard shortcuts settings

[Intuos5]

I would like to request that the numeric keys, which are used to set the opacity of an object by default, become available for editing within the keyboard shortcuts section of the preferences. The reason for this is that these keys are very accessible, which is the reason I would like to use them to toggle between Photo's personas and edit inside of Photo/ Designer. Unfortunately though, some shortcuts will override the opacity shortcuts and others won't. This causes inconsistencies as discussed here: