PL is primarily a raw file processor. What you want (I understand this very well) is a subsequent change to the captured image and that is only possible in a pixel editor… which PL is not.
For example, such a change would be possible if the developed image is exported and then edited in a multi-layer pixel editor.
- Either you use PL for development and export for another application (e.g. Affinity Photo, PhotoShop)
- or you are looking for a software that can do what you are looking for/need. – You already mentioned ON1.
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Note: This is not about “shooting” it down. Currently it is simply not possible.