A little planning can go a long way. Just getting things to show on screen is easy, but protecting yourself against having to completely redo your website for it's next upgrade or just because something broke, can save numerous headaches and will save you money in the long run.
Planning for what system to use and how to create effective layouts and user permissions is all part of the equation, but we also take a considerable amount of time to get to know your business, hobby, or community in order to provide suggestions on content creation. An online store for instance may want to have comparable features between different products, planning ahead of time can make this a possibility from the start versus having to go back and re-enter all your products using a different attribute system. Knowing what different systems and platforms expect information wise and how they utilitize can keep you on the right track so your information is always usable.
Strategic planning ahead of time can help you avoid choosing a system that is a wrong fit for you and may open up possibilities in the future you weren't even sure you wanted yet. A strong foundation doesn't start with laying the first brick, it starts with the planning to lay the first brick.