I use this "link profile" option to build a whole chain of profiles. Starting with "Windows", that links to a profile called "Shell commands", which links to an "AI" profile, then to "Media Control" then to "App launcher", "App Control" and finally "Profile Switching".
So any new profile, I just tell it to link to the "Windows" profile and ALL of the commands from Windows and ALL the profiles in the chain are available.
The only thing to be careful of is order of precedence. A command is acted on by action the fits closest to the top of the chain.
This allows me to build profiles around one particular setup e.g. Media Control, and just change commands there, knowing that it will affect all profiles when I linked the Windows profile etc.