Have you checked over at
whether a Feature Request on this particular issue exists?
The shortcomings of other presets (Brushes for example) with regard to organising have been mentioned in the past, I’m not sure about the Actions Panel, though.
I'll take that as a 'no', then.
Suspect there will be more effort put in to 'how to get more hi-res hippocons onto an iPhone' than basic hierarchies. Come on it's so simple even Microsoft can do it
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Just to make sure you don’t think you are addressing Adobe here:
This is a user to user Forum, so you are not really addressing Adobe here, even though some Adobe employees thankfully have been dropping by.