I know a lot of the problem is the people "behind the scenes" so to speak, in christian media. I've read several interviews with members of bands that started out christian, but were rejected by labels because the executives didn't think their lyrics were christian enough, Lifehouse I know was one of those bands. They even started out as a worship band, and while the lyrics over the years have mostly turned to love songs I felt like their first album did reflect at least some christian background.
I think the push for being "christian enough" is a horrible attitude. If they're solely focusing on the content, and less concerned with the actual quality, then yeah, it's going to get neglected and be unoriginal. It's like all the christian bands there used to be that were literally nothing more than a christian rip-off or take on a non-christian band, and that's exactly what the label had in mind. There was 40DT who was the christian Limp Bizkit, another band (I can't think of the name) was a christian metallica. TFK started out as a christian rage against the machine. The producers were so focused on putting a christian message to the style of something non-christian they didn't really care or not if it actually sounded good.