Your premise is self contradictory because you are saying we should allow open discrimination so that we can more easily confront it.
If we allow it we are saying we are not going to confront it.
The problem with discrimination is because it tends to be universally applied by a priviledged group against a less privileged group.
You are saying... "What's wrong with exploiting privilege"...
Nothing if you are the privileged group - plenty if you are not.
First I'll admit that I think that people should be able to get more out of their privilege than they do now.
However, I don't find my position to be contradictory.
Allow me to explain.
In the united states, before the civil rights movement, segregation forced black people into their own distinct communities. In this environment of naked discrimination, the black professional middle class was forced to live in these neighborhoods, so many blacks had access to dentists, doctors, and lawyers.
Since the civil rights movement, the black middle class is no longer forced to go to black colleges or to live in black neighborhoods, and on some level that's fine, because it means greater opportunity for those people. However, quality of life in black neighborhoods has declined significantly because of this brain drain. Moreover, poor black youth have no doctors or lawyers to look up to in their neighborhoods as role models; instead they look up to basketball players and drug dealers.
Now, what has happened is not the elimination of discrimination, but its bifurcation. Those people able to leave the hood or the barrio are mostly freed from abuse, while their less educated brethren spend their lives in poor neighborhoods working low wage jobs with little prospect of advancement in life.
I personally think that our politically correct attitudes make discrimination fuzzy enough that it is hard to organize against. This is illustrated in how hard it was for Obama supporters to effectively counter borderline racist rhetoric from opponents during the 2008 election.
I think that if we "unfuzz" discrimination and allow people to be more blatant about how they discriminate against people, then the fault lines of discrimination will become more obvious, and people will be better able to know which side they are on.