2. The 49ers stay inovated, consistently reinvent themselves
Besides being one of the best head coaches in the NFL, Kyle Shanahan has branched out and influenced the league with his offensive philosophy. Opposing teams often find themselves trying to integrate some of his concepts to varying degrees of success. That said, Shanahan's system has evolved throughout the years, which has prevented the 49ers from becoming predictable. Benjamin Solak of The Ringer just wrote an excellent piece about it.
The skinny is that Shannahan used to heavily employ wide base and play action elements but he's moved on from both concepts in recent years, paving the way for dropping back without faking the run more often.
Meanwhile, the Jaguars' offense was often scrutinized last year for their lack of creativity. Although offensive coordinator Press Taylor was praised for putting together superb game plans, he also earned flak for being unimaginative and abandoning the run. Looking back, his system wasn't bad, but it wasn't great either.
Yet, head coach Doug Pederson chose to retain him, even though the Jags routinely struggled to put points on the scoreboard and often failed to feature the run. If Taylor wants to prove Pederson made the right call by going to bat for him, he'll need to get back to the whiteboard and tweak his scheme.
In Taylor's defense, he might not be able to run all the plays he wanted because the offensive line was inadequate last year. That said, fellow offensive coordinator Bobby Slowik had the same issue but still managed to work around it, and helping the Houston Texans make the playoffs along the way.