People love to harp about Lance's obvious flaws but forget that a very rare base of talent is there. I think Lance has actually turned out quite well given his maturity issues, the fact that he is only 23, and what I think has been fairly lackluster Pacers coaching in terms of putting a good offensive system in place.
People shouldn't think of the immediate gains with Lance but where he might be in 2-3 years. By then Lance will be a little bit older and wiser (people in their mid-late 20's and early 20's are quite different maturity wise), he and PG will know each other's game and tendencies like the back of their hands, and Bird may even decide we need a better X's and O's coach who can take advantage of our players skillsets better. All of that on top of Lance just being 23 and ridiculously talented.