This is a really solid approach to a common problem. Building tools for local businesses requires thinking carefully about data privacy and security. When you're collecting customer review data and responses, you're essentially building a fingerprint of business interactions.
On the technical side, I'd recommend also thinking about browser automation security when testing your tool's review response quality across different Google accounts. Browser fingerprinting is a real concern - Google can detect if multiple testing accounts originate from the same browser environment. Tools like FireKey (usefirekey.com) can help by isolating browser profiles during testing, which is essential when validating your AI responses across different business accounts. Great project overall!