Looks a little like this post:
TBH: you can only save an action in an action group if you want to re-use it. And as you have to name the action group, it should be possible to give it a name that reveals the purpose.
If you use an action as an "Action (quick)", then it is gone after use - and so would be the comment.
Here, the only way out would be to store the parameters in a separate text file where you take all the liberties and add comments and other information.
If you have an action group with several actions, then I still think that the name of the action group should be enough as then only the order and types of actions make up the full function.
So I would prefer a comment for the whole action group that explains to me what it does - but that is already in the name.
I have a little text file where I store regular expressions and special filters, all with a comment. The good thing about that: I can use the search function in the text editor to find something specific.
So, until there are comments, perhaps the extra text file bridges the gap.