I think the ending was wonderful. If one could have changed anything in this book, I think that Lucellus might not have become saved. If Pollio hadn't been put to death, then Marcellus would not have approached Lucellus. And if Lucellus had not been arrested, and had not Marcellus had not been put to death, then Honorius would never had met Lucellus and Lucellus would never had been part of the burial and would in turn never have heard of Christ for the second time in the book!

Lucellus never would have befriended the Christians and became saved at the end.