This same roster could easily be 8-17 under a different coach. Pop assembled functional pieces, but no one, outside of Aldridge perhaps, could be considered a star at this point in their careers out of this group. A healthy Kawhi added to this mix changes that of course. Then the Spurs become a superstar surrounded by what hopefully is the right supporting cast.
Pop pisses me off sometimes with some of his decisions, but he's a great coach, and puts together a roster that works under the Spurs financial constraints. The record speaks for itself. Hard to complain about the 5 rings, too, considering only 10 teams in history have more than 1, and 40% of the league's teams have none. Could the Spurs have more? Perhaps...but they also could have a lot less.