I also agree that the culture of the group is very important. It can get off to a rough start if the initial team is not very compatible . This is especially true when the project is ongoing or will be a permanent part of the company. I also think that picking a team that works well together is especially essential to making sure all the different personalities do not interfere with everyone individual ability to work. Having a team where everyone one can have a specific thing that they are good at and be enabled can be good is the team leader can recognize and advocate properly.