Our council is really trying to reduce tillage and working the soil. If we could find a zero tillage system for all crops it would be fantastic, but I have not yet found one for potatoes. Zero tillage does not work for potatoes. It is still difficult for vegetables, carrots for example.
There are ways to enrich soil to minimize the damage of all the work on it. You put in cover plants after the potato harvest. It is already being done in New Brunswick, in Prince Edward Island, and everywhere. You try to cover the soil with something living after the harvest. It helps us to replenish our soils.