That is a great thing to make sure you have in your business plan, that your business will be built around those real customer wants. Do not make callous assumptions, or statements like "I know what people want", "People are going to love this", and so on.
But do not be too paranoid, make sure you are showing it to people you trust, whose feedback you welcome and can be genuinely useful in guiding how the plan takes shape. Very often when working as individuals we get very close to certain details and miss out a big thing that has slipped your mind.
When I have received business plans, the very best responses come from people who have looked at the risks and have an answer for every question. What you never want is to throw a scenario at your plan and have to answer "I don't know what I would do in that situation". You want to plan for every possible contingency, and certainly all the major risks to the ongoing success of your business.
A successful project report must achieve the following objectives: Be appropriately arranged, with an executive summery, a table of contents and its chapters in correct order ; Be the right length and have the right appearance ; Give a sense of what you and your company expect to accomplish ; Explain in quantitative and qualitative terms, the benefits to the user of your company products and services ; Present hard evidence of the marketability of the products and services.