Very interesting! This is a little similar as to what editors like Davinci resolve do where they want to cater to workflows that are up or down the waterfall of video development. Not saying that it is a pure waterfall workflow, but they do have a stage called postFX for a reason 
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Something what would be helpfull is if you can show and tell about what problem this would solve for you and when you have encountered it. Looking for specifics here, not conceptual.
I think this way of thinking is certainly something to keep in mind. We could cater towards more specific workflows with certain presets for example. For now, however, the idea is make sure we don't create additional complexity in the UI, plus make sure that customizing it to your needs is as simple as possible. With that as the foundation this is something we can look into.
Feel free to open up an issue on GH on it if you'd like so we can track this problem space and potential solution. Though if enough merit is there for it, it will pop up regardless 
