Before the 49ers bolted for Baltimore, and Thursday night’s exhibition opener against the Ravens, quarterback Colin Kaepernick and offensive coordinator Greg Roman addressed offseason changes to the team’s playbook. The essential premise: Roman and head coach Jim Harbaugh sought to simplify their menu of plays. They won’t divulge much more than this, naturally, but Kaepernick acknowledged the changes were motivated by the 49ers’ occasional struggles to reach the line of scrimmage in time. They sometimes waited for play calls to reach the huddle, then scrambled to snap the ball in time or wasted a timeout. “I think everyone is just on the same page,” Kaepernick said after today’s practice in Santa Clara. “We simplified some things and made it easier for us to get in and out of the plays. That’s helped us a lot so far.” Roman insisted the changes weren’t really driven by the occasional problems getting snaps off in time. Still, he and Harbaugh recognized they needed to sift through the clutter.