1. look for a boring problem that needs solving. related to the product market fit. a lot of founders are trying to build a sexy solution to a problem that no one has.
2. Sales is half the equation!. you can have the best engineering team in the world but it means nothing if you dont have good sales. and good sales people don't just get sales. they are the first point of contact for your prospective customers. Empower them to get feedback and ideas for how to evolve your product. half of our features at my startup are things we never would have thought of until our sales guys kept telling us how many restaurants were requesting the feature.