As JWillis said, the design is for a balance run/pass attack. My guess would be that this season you see more running than passing simply because the O-line has looked much more suspect in pass protection than it has in run blocking. Plus, assuming our RBs stay healthy, we have a wonderful 1-2 punch in Davis and Hollings, whose running styles complement each other perfectly. Thunder and Lightning.
But if the O-line can give us some protection, you may see the team unleash David Carr this year. His honeymoon is over and it's time to see if he sinks or swims. His receiving core is healthy and solid, so the only question mark is whether or not the pocket holds. As usual, it really all comes down to injuries...but going by the general view, there is more of an injury concern for the RBs than the other skill positions. If Dominick Davis stays healthy, though, I could see him rushing for 1400-1500 yards this season.