Walker is most certainly a game changing player. He's long, athletic, willing to defend - already a huge upgrade over most of the team -, is a legitimate threat from 3 and opens up lob opportunities with his athleticism, besides from a finishing package around the rim. He's explosive and fun to watch, everything the rest of the Spurs are not - but he's being placed in a position to fail. We have not, and will probably not for the rest of the season, see the best of Lonnie whilst archaic LMA and DD drag the team down with their slow-it-down ISO shtick. Lonnie would thrive in a transition-based, run-and-gun offensive scheme but neither Pop nor the Spurs roster are anywhere close to it.