Chris Paul is absolutely the best PG in the league. The "best-of" list includes Tony Parker, Russell Westbrook, Stephen Curry, Deron WIlliams, healthy Derrick Rose There are some young guns coming up like Kyrie Irving, Jrue Holiday, Mike Conley, Ricky Rubio, Damian Lillard and John Wall.
Rondo is somewhere in the Top 10. Chris Paul is undeniably a superior player...
Problem is, point guards don't really win titles in this league. The last team to win a championship with a point guard as their best player would be the 80s Pistons and isiah Thomas. It's a big man and scorer's league.
So upgrading to Chris Paul would be nice, but it wouldn't be enough.