Agile practice development is very important within an organization. Being swift and efficient is always the best. Often times it isn't a synchronization that can be achieved too easily. It requires knowledge that those on the team all have to share along with trust and that's gained through expanded time. Time that can be taken away when a member leaves for a multitude of reasons. If members feel comfortable, they won't leave though and that all circles around to positive practices in the workplace. There are ways of course. Just like there are companies applying those methods right now....