Looking at the app, you need everyone on the team on it or it doesn't really work? Or are there enough features that someone could use this Solo/with a partial set of team members?
>you need everyone on the team on it or it doesn't really work? We tried to strike a balance, the app does work standalone but you're right: the experience is better with a team. I think several apps (Kik, What's App) have set the expectation that it's ok to automatically scan their phone book and identify which users already have the app installed. So far, we've decided not to do this. Feels slimey, but so easy to do.
But your second suggestion is to make it easier to invite others, easier to build a social graph? Yup, we should rethink the UX in that regard.