The modern NBA offense is all about pace and space, along with having every player being a consistent threat from deep. Nearly every team entering this season will be pushing a 3 point dependent offense and then there's San Antonio.
With the acquisition of DeMar Derozan, San Antonio adds another mid range heavy offensive player to pair with LaMarcus Aldridge. Neither DeRozan or Aldridge are consistent threats from deep and even though they can make the occasional three, it's not their bread and butter. History says though that San Antonio could still have an elite offense this year, despite bucking the current offensive trends.
The 2015-2016 Spurs squad had an elite defense and offense; that roster featured Aldridge, David West, Tony Parker, and Boris Diaw, none of who are threats from outside of 20 feet. That Spurs team finished with a top 3 offense in the NBA, 2nd in percentage of points from the mid range, 25th in three point scoring, yet this team steam rolled the entire league. While the Spurs' defense this year probably won't be as good, they have a chance to have another offensively strong year.
There's no chance coach Gregg Popovich tries to change the way DeMar plays, as Popovich always plays to his players strengths. With DeRozan on the court, the Spurs offense gets a weapon they desperately needed last season as DeMar can be their off the dribble creator and another big threat next to Aldridge. DeRozan will also take some play making duties off of Patty Mills, who has been “meh”, and up and coming Dejounte Murray, who is still young.
The 2017-2018 Spurs were garbage from deep, due in part to a lack of shooters and also they didn't have an elite player who could help create shots. With the introduction of DeMar DeRozan, expect the Spurs to be a lot more respectable from deep as a lot of weight will be taken off Patty Mills, Brandon Paul, and even Davis Bertans.
The largest issue the Spurs will be facing is how to get the most out of their starting line up. While the season is still a few months away, you can easily assume the Spurs starting line up will look like Dejounte Murray, Patty Mills, DeMar DeRozan, LaMarcus Aldridge, and Pau Gasol. That line up still presents a lot of spacing issues, but could easily be an offensive juggernaut that San Antonio needs. Past the presumed starters, there are guys like Rudy Gay who is still an offensive threat from a now obsolete era. Despite what many teams would view as an offensively obsolete roster and a major step back, it's clear that San Antonio views this squad as a massive step forward.