The right questions aren't always known up front. Some of the reasoning for using AI in the first place is to refine a fuzzy idea, so a tool like this can help one to go from fuzzy to concrete, with good guardrails in place to ensure the concrete is truly solid. The in this case, the point is that the components of good user interfaces are already available, and then composed based on user prompts to their exact specifications and frozen for normal usage. Unfreeze and prompt again later to tweak further, etc.