Exit interview for citizenship renounciation

I'm about to start the process of renouncing my citizenship. Was born in Boston, left at age 2 months, lived in Australia as an Australian citizen all my life, no intention of living in the US in the future. I've heard that there's a lot riding on the exit interview at the counsul as part of the process and if they think you are renouncing to avoid taxes in the future they won't let you renounce. I've heard people also hire consultants to coach them for the interview! My basic argument would be that I've never lived there and I have no intention of ever living there. My identity is Australian, I'm an Australian public servant and my career goal is to serve the Australian public and our national interest. So I don't need US citizenship. Seems pretty straight forward but I feel like there might be way more to the exit interview than I realise. Has anyone had experience of this and can shed some light?