I don't think the prompts that the author has proposed will actually work. Including final scope and non-scope is good but it's more of a reaction of what the AI already did. These prompts are suitable for a rewrite, basically, since it's unlikely anyone would have had these ready when they start out.

I have found small iterations to have the best results. I'm not giving AI any chance to one shot it. For example, I won't tell it to "create a fleet view" but something more like "extract key binding to a service" so that I can reuse it in another view before adding another view. Basically, talk to the AI as an engineer talking to another engineer at the nitty gritty level that we need to deal with everyday, not a product person wishing for a business selling point to magically happen.