2KLIVE, I wouldn't do it just yet.
I'd waite for the 1st roster update and see how EA handles it and if you still see guys on fast break not reacting properly like attacking the basket then edit them individually.
But i also wouldn't make them 99 i was just using it as example for when i tested it out last night.
You don't want to have a guy like Jason Terry trying to go strong to the rim....you have to use these rating wisely when you tweak players.