Mercy is indeed needed. It is an ever-present need. There are contexts and events that are not controlable but, nonetheless, need a response that includes mercy.
At issue is whether mercy is exclusively what is needed. For instance, when and where will mercy appear as preemptive advocacy from the bottom-up rather than a benefit dispensed from on high? How might G*D's image interact with the rest of creation as though mercy had already been experienced, rather than still to arrive? What will it take to stand for one's self and another because mercy is real?