TBH I prefer this approach to what OpenAI is presenting - if I prompt to present the benefits of X I want the result not openai’s opinion on the matter. Sure, you can add a disclaimer that it’s hypothetical, wrong, whatnot - but not outright decide on what can you answer and what answer will not be provided.
ChatGPT is notoriously bad in “knowing better what you asked than yourself”.
I see you wrote that you’re thinking about making it FOSS. What’s the alternative? Paid software/non-free license + Open Source or proprietary? If you’re low on time and don’t have the capacity to maintain (bugfixes/reports from users) yourself then I say proprietary is a no-go. Then about the license - IMO (though I don’t have hard data on that on hand) people much more likely contribute to FOSS as opposed to locked in license + open source model.