It's easy enough to do 'stacking' of presets.
Each time you want to 'add' something, you change what it is, create a preset of that setting and when you go to 'Add a Preset', you get the window up with the options of what to use.... UNCHECK ALL and only check the single entity you are changing.
You then have all the previous changes still there. Oh, of course it's bleeding obvious that you realise if you change something of the same value as in a previous preset the latest version will overwrite it.
That way you can create quite a few presets, and when you 'update' a preset also it will have the added bonus of having previous + new preset.