Keep this in mind – it is always easier to go from a simple product to a more complex one than the other way around. 

A classic 'shoot your dreams' down critique of start up pitches is that something is a feature vs. a product.  Newsflash – all products start as features.  How you grow them, make them valuable to your customers, and position them within a broader ecosystem of other products is what makes a company scale and a product roadmap shine. 

Start simple.  If you are trying to take something complex and "dumb it down" make sure you have both the support and tolerance of investors as well as other members of the team as it is a tough road.