Your welcome.
You can also create a attribute named Favorite and then sort on that attribute like any other. Of coarse you need to select and save that attribute with your favorite presets to do so. And for factory presets it will mean youll need to have it twice on your system as i believe you can't change and save factory presets.
I think the sort feature only have that wrong, that youdon't know when you have browsed your presets. It would help it you in the header could see if it was a favorite preset or not. But by sorting you do have the favorites together in a row.
But clearly a favorite filter would be better if it is possible to do in the system. I would think it is possible.
I would also like to be able to search in the comments. If so you could search for any word in the comments.
But for insyance the fact you can create your own attributes, and there are many possiblities, then i think it's a powerful system. But yes it can be better with features like filtereing by favorites and searching in the comments.