Unfortunately, GPT-3, CoPilot, AlphaCode, etc., also excel more at the creative part (helped out by their enormous training database, which saves you from doing the Google search to match your high-level description to examples), but they're still dogshit at editing, because that is the part that actually requires a detailed understanding of the text. So the princess is still in the next castle.
Hmm it intuitively seems like the editing part should be the easy part, because the output is basically a template, and you just need to fill it in, and tweak it a little bit…
I get with code it’s a bit less so, but still, there are plenty of design patterns which basically cover a lot of the output space…
The context window of GPT-3 is vanishingly small compared to any novel-like work. GPT-3 will happily invent descriptions of characters and objects that contradict what it suggested three pages ago.
Not saying it can't help you with getting an idea what to describe, but this is the kind of "editing" that it won't be good at.
