1. Lebron. (no matter how bad his team is, he's gonna give you a chance to contend every year)
2. Durant
3. Dwight Howard
4. Chris Paul
5. Derrick Rose (when healthy obviously)
Not quite sold on Harden being a franchise player yet. Think Curry is getting there, should be on the list by next season, elite shooter, underrated passer. Kyrie needs to work on being a more complete player until he gets on the list.
I don't think someone can build around guys like Westbrook or Carmelo as their number one option and win the championship.
If we're talking about guys in their primes then you obviously have to include Kobe, Garnett, Duncan, etc.