If everyone is starting from different spots, then you are not starting together, you are starting apart.
On a new project, getting the team onto the page is the hardest thing going.
If you get it right, if everyone is on the same page, the delivery, the direction is clear as day.
If you get it wrong, everyone goes off in their own direction and no amount of standups, scrums, meetings will bring them back.
The team needs to know where they are starting from, always.