Hint: Fast Development Points
Go to Pick Up Game and set the points to "2". Once you score you get 50 development points which you can use to get create-a-player points. You get 50 points every game you win, so if you just keep doing a rematch with only two points you can get a lot of development points.
Hint: More Easy Development Points
Set the difficulty to "Legendary" and start a pickup game. At the "Choose Rules" or "Play Game" menu, select "Choose Rules" and set it so that your team has 20 points and the computer has zero. Then, simply start the game and score once to win and earn 150 development points.
Hint: Created Baller Nicknames
The nickname your created baller gets in Be A Legend mode depends on what attribute you have the most of. For example handles could get a name like "Pop", blocks could get a name like "Vengeance", and steals could get a name like "Heist”.