thanks for using my team.
When you click on the link you get your own team :-)
As for the rest, Charles will probably be able to explain all of that a bit better. Too many minutes is definately bad for players' form and not great for optimising training across the team if one guy hogs the court time.
The new page is designed as a quick overview to help you rotate your roster better. A factor which eventually will be critical to having a successful team.