Hopefully, if The Song is as good as you say it is, it won't get lumped in with the other Christian fail movies and help to earn the genre a little more respectability.
One of the things that concerns when I look at things in the Western world is this antagonism that seems to be going on lately. I see some atheists claim that all people who believe in religions are deluded and insinuate that they aren't as intelligent, and that religion is the problem. It goes without saying that religions are causing problems even today, but that's just human nature. Thoroughly take out religion and something else will always come to the forefront to muck things up.
So I really don't like it when people just assume Christian art is this LOL-worthy low art form propagated by ignorant hicks and fundamentalists. It is, like all other ways of thinking, just a historically ingrained ideology with the power to be as transformative and positive as any other.
Sometimes it makes me wonder if these people paid attention in history class. During what I always hear is called the Dark Ages in Europe, it was early Christians where a predominance of reading and writing took place, advanced their works of philosophy, journeyed back into the passageways of science, recorded history and preserved much of the written work of antiquity, while a lot of other forces didn't care or were burning and destroying such things. At least that's what I was taught in world history. I don't think there was secular forces doing such things until much later, at least not in Europe, maybe things were different in Middle East Asia.
Of course, then things rather went to shit with the church's power, but that has more to do with the nature of power and the overwhelming force of superstition in those days than any kind of corrupting force of Christian thought.
In any event, another somewhat recent Christian movie that I thought was good came out in the 90s and was called Shadowlands. It was about C.S. Lewis and his relationship with the woman called Joy who prompted him to write his book, Surprised by Joy. It's a rather powerful film about discovery and loss. It helps of course that it is centered around one of the smartest theologians of our time.