I remember in Live 2000 (or 2001) I used to take the camera that was behind the player and zoom up completely. Gave the game a completely new feel as a matter of fact.
I doubt that it is possible to edit the cameras though, but I'm not sure at all. It's actually quite possible since the files appear to be standalone. They seem to be located in the
\NBA LIVE 2005\merlin\ so what you could do is mess around with those and see if you come up with anything. But remember that it's on your own risk and that you should back up before...