How much impact does setting your backups at getting tired and your starters at fairly fresh make on actual playing time/substitutions? Would having a high stamina player set for higher fatigue that is #2 at 2 positions make him more likely to say slide from the 1 to the 2 and give both starters a break before subbing back out? Is this a way to try to help moderate the hockey style line-changes that seem to occur in HD?