Develop product engineers to be better. Have empathy and communicate with the target customer more clearly and understand the landscape better. That's pretty m

Develop product engineers to be better. Have empathy and communicate with the target customer more clearly and understand the landscape better. That's pretty much all you can do. How you organize it only matters insofar as it makes your team effective - sprints, waterfall, XP whatever... is kind of a toss up and context dependent.