Not accounting for specifics like chemistry, to win now the J's would need a true number one option/top 10 player making them 2 and 3 option. Think beal, harden, leonard, lebron, AD, Durant, Embid level players.
In a cpl years, perhaps they grow into 1 and 2 options. It may even be likely but lots can happen to throw a player off the path to superstardom.