Nice job—I'm always a fan of 'bring your own key' (BYOK) approaches. I think there's a lot of potential in using LLMs as virtual copy editors. I do a fair amount of writing and have actually put together several custom GPTs, each with varying degrees of freedom to rewrite the text. The first one acts strictly as a professional editor—it's allowed to fix spelling errors, grammatical issues, word repetition, etc., but…
My partner and I were just talking about how useful that would be, especially driving in the car when all of the "we should..." thoughts come out of hiding. Capturing those action items more organically without destroying the flow of the conversation would be heavenly.