In my team, we write a half page of user stories up front so we're all clear one who the user is. After that it's all iterative prototypes that get shown to cli

In my team, we write a half page of user stories up front so we're all clear one who the user is. After that it's all iterative prototypes that get shown to clients. They're a lot better at giving feedback when they have something in front of them. The resulting problems they have get turned into issues, e.g. "we need the default for value foo to be bar". Dunno if it's a process following best practices, but the team's growing so it's worked well so far.