Liberalism means free thought.  It already has.  Secular, I agree it should not, but it should take over secular services from the government like incarcerating addicts, education, et al and it should respect the religious sensibilities of those it serves.  Humanistic? It better be.  God is.  Atheistic, it won't, but I hope it gains back the self-criticism that used to be known as the Spirit of Prophesy, which atheists seem to have taken up for us.