Spiller/Jackson splitting by series is wrong in my view. I think that Spiller should start, be the first down back, But Jackson should be the short yardage back, and both should be on the field some of the time, get your best players out there. So, I agree with those that want a different mix. I am almost ready to make Jackson the 3d dwon back, but thats still wrong, Fred is to good for that. So, both are 1 and 1A types, and saving both for the long term by sharing the hits is smart. Chan needs to change it, but I really don't know exactly how to do that in this offense.