Opposing POV or alternate viewpoints are actively being sought on Conservapedia. It's just that the management wants them labeled as alternatives. You can't put liberal POV into articles and expect it to have the same standing as a conservative viewpoint. If you agree to that, almost anything goes.
I offered a while back to do a compare and contrast between liberal and conservative ideas. I spent over 6 weeks discussing the terms of this offer, but it broke down over "who gets to decide" whether a given contribution provides a fair description of a viewpoint. Perhaps we should do this exercise here, then. You all can edit mercilessly - as befits godless atheists! :-)