" Can we talk instead about the morality of living in a world with such extreme racial disparities (and biases) in wealth, income, educational opportunity and achievement, LSAT scores, community resources, etc., etc., and NOT coming up with any sort of remedy?"
Two wrongs do not necessarily make a right. Just because a situation is bad, it does not mean it is OK to use immoral means to remedy it.
1. I don't think you have two wrongs here. The OP referred to AA as "someone getting a preference because of her race" or something like that. I guess I would agree that this is wrong, stated this way. But AA is something else entirely. AA means reading applications contextually, taking account of various advantages and disadvantages the applicant has had throughout life, and considering the role that applicant might play in the student body and in the profession. And whether you're comfortable admitting it or not, race is one of the most reliable indicia of academic and other advantages. It may be an imperfect proxy, but it's what we've got. There are communities that are underserved because their members don't have the same opportunities other people do. Do you really want to deny them adequate and effective representation?
The more privileged among us should work to create opportunities for the less privileged among us. This is a principle that would stand the OP's test of time and circumstance, and it's a much better description of what affirmative action is about.
2. But even if you hold onto the belief that both affirmative action and the vast racial divides in our country are wrong, it's still a matter of degrees. I'm sick of people talking about how AA is "immoral" or whatever, without giving any thought to the alternatives or acknowledging that we have to do something. It's like corporate whistleblowing. Is it "immoral" to breach your employer's trust, break confidentiality agreements, etc.? Well, sure, probably. But come on, if the company is, say, knowingly dumping carcinogenic materials into the local reservoir, isn't that "immorality" on a much grander scale, more worthy of public attention? If a bunch of corporate shills came out whining about fiduciary duties and proprietary information and all the rest, wouldn't you just want to yell at them, "The kids are getting f-ing cancer! Get over it"?
I'd like to give a shout out to John Galt, who is much more patient than I, for starting a thread that poses the challenge to construct your own admissions system. At least I think it was JG. Anyway, it was a good idea.