"What could be done to improve Christianity?" is a question that the church has never, ever asked us. But if they did, we'd tell them to bring back the era of the ass-kicking saints.
Did you even know there was such a thing? Sure enough, history books are full of men who could quote the Bible and beat you to death with it, at the same time. For instance ...
6Ignatius of Loyola was Cannon-Proof
Living in the early 1500s, Ignatius spent a good chunk of his life as a military man. A gambling, barroom brawlings military man. Oh, did we mention the whoring? Or as he put it in his autobiography "wenching."
During a huge battle with the French, his own men knew they were doomed and proposed a surrender. Ignatius would have none of that shit. He fought on and, shortly thereafter, he was shot with a friggin' cannon.
The ball passed right between his legs, tearing one open and smashing the shin in his other leg. When he was carried to town to be treated, his broken leg had to be set, rebroken then set again. A chunk of bone sticking out had to be sawed off. When it was discovered that whoever set his leg had fucked it up so bad it was now shorter than the other one, they used weights to try to unsuccessfully stretch it out.
"Boy, we are just not good doctors."
When you consider this was around 1520 and they didn't have frivolous luxuries like sterilization and anesthesia, you realize the guy was more hard-core than entire countries' worth of today's pansies.
It was during his recovery, when his cannon wound made the whoring and brawling inconvenient, that he was forced to read stories of Christ and eventually decided to devote his life to God. That led him to one day found Society of Jesus, what most of us know as Jesuits. You may know them from their statues of a guy giving the finger to a cannonball.