I like your idea of harnessing the unconscious on a personal level, though I'm a little ambivalent about and uncertain as to what it would even mean to apply this to "the institution of law." To try and depart from logical reasoning would seem to be a move away from the entire enterprise of being a legal practitioner; it's the tool we have to work with, and there are other disciplines that are far better equipped to deal with the utility of emotional memory than the legal profession. Then, again, if we believe that an institution is not a monolithic entity, but comprised of and informed by its constituent parts, I think allowing more than legal reasoning to inform the the way we, as individuals, personally think about our practice, and view our role as lawyers, would already go a long way towards making the profession one we're proud to be a part of. But anything beyond that just strikes me as, perhaps, unrealistic.