Leaving out the epistles gives you room to put more books into the Christian canon when the Council of Nicea II is held. We're overdue for one. I have some suggestions for material to add... but that's probably material for a new thread.
One could only hope that they would include Mark Twain's
Mysterious Stranger, Lewis Carroll's
Alice Through the Looking Glass, Kipling's
Kim, CS Lewis'
The Last Battle as well as the Epistles of Abraham Lincoln.
Aslan is not a
Tame Lion