Veggietales (the old ones) will always be the best Christian media, since it found a way to blend Christian ideas with humor for all ages, good storytelling, and amusing characters. The new ones just look scary, maybe it has to do with a bigger budget and dipping more into uncanny valley, but any of them through the mid-2000s will always be good.
The biggest problem with Christian movies/cinema is that the only people that are going to go see them are Bible beaters and people who already believe in Christ. No non-Christian is going to go see a movie where they're preached at for 90 minutes. There are many ways to spread the Gospel, but I don't see theater as one of them. Not to mention that from a filmmaking POV they're not very well made either, incredibly cliche and predictable with bad acting and arguments that never paint the full picture. Thinking specifically of God's Not Dead, the whole movie shows the professor as this comic book-tier villain who abuses his position as a professor to attack other student's personal beliefs which is against the academic code of pretty much every university in the country and something not even the most militant atheist professors would do. The only reason he converts in the end is because he gets hit by a car, making it seem more like he confessed out of fear than he did genuine belief. I like Kevin Sorbo but the movies are so pretentious, one-sided, and echo chamber-y that they're unwatchable.