The Miami Heat's new offense isn't all about pace. There's also been a noticeable—and notable—move away from pick-and-rolls, which both helps instill motion in this offense but could also eventually leave it exposed against opposing defenses.
As analyst Zach Lowe noted, the Memphis Grizzlies tried a similar approach last season, but once defenses caught up, they spiraled down the stretch and wound up firing their head coach, Taylor Jenkins.
Hinted at this on the ZL Show before the season + noted lack of PNRs in their first game. Keep an eye on the Heat -- and whether the league gets a handle on it, as happened to a degree with MEM running similar stuff last yr.