This great plan of salvation opens the opportunity for this life to be a time of learning and not one of condemnation. Where justice might require punishment, mercy gives us repentance and time to learn and grow, thereby, perhaps, to no longer merit that punishment. Both are still satisfied. There is simply time and opportunity to improve.
In the end, it is still a restoration of the desire to do good or evil. The difference is that the plan of redemption gives us the chance to learn how to do good.