I'm writing my first-ever dissertation proposal at the moment. It's an interesting challenge. I'm thinking of making a study into whether what I've done at work is something that can be repeated and made useful across broader industry as a whole. Yes, I'm going to attempt to blend audit, marketing, and strategy into a single paper.
One fun tip I found: "Make figures that other will want to steal. They will cite your paper because they want to use your figure in their paper."