If I'm looking for my #1 option, I want someone who will make his teammates better and work within a system. I want someone who not only has individual talent, but who respects the team of professionals around him, the coach, and the organization. I'd also want someone who knows who pays his salary: the fans. A little humility and grace in light of all that a pro athlete gets and can give would not be "extra" in my NBA franchise.
That is 100% not what Lebron is.
I'd take Durant over Lebron in a second, and probably CP3 and Melo. Gasol is making a case. There are a number of 1st/2nd year players that I'd need to see more, but John Wall and Blake Griffin are possibilities, as is Russ Westabrook.
I just think Lebron is such a cancer to an organization that he takes as much as he gives and, in the end, poisons any chance of winning when it counts. I really wouldn't want him on my team, and would probably take a package for him if I couldn't get Durant, Melo, or CP3 for him straight-up. The team would be better. It'd be like trading Wilt...