Momentum is building to end the one-and-done rule that nobody likes — not NBA teams, college coaches, universities, or fans — but there is concern about what replaces it. Will that really be better for the players, or do we need a more radical system change? Kurt Helin and Rob Dauster of NBC Sports discuss that, then get into the 2018 draft. How far does Michael Porter Jr. fall? Is or Luca Doncic or Marvin Bagley III the No. 1 pick? What about Deandre Ayton? They cover all that and more in an early draft preview.