An identity that explicitly declares no options no longer differs from one that does so implicitly. No options at all and a set of unstated ones now compare equal.
A sequence altered for one reason no longer restates the others. The change carries the folded options, so a plan that changes the cache does not also restate a start it never asked to change.
Identity and sequence restarts now warn correctly. Restarts are data hazards: restarting the counter, means duplicate values are issued, meaning inserts collide with what is already stored.
