These aren’t quite as tantalizing as TT’s NT tidbits, but we don’t have similar extra-scriptural data to work with here. I’m trying to be as provocative as I can (which probably just reveals my hard-core McConkie-style orthodoxy <g>)
1) The Book of Mormon doesn’t depict a capitalist democratic society.
2) The Book of Mormon doesn’t depict a church structured like ours today.
3) Joseph Smith never preached a sermon based on a Book of Mormon text.
4) The first two chapters of Mosiah are missing.
5) It’s not much of a prophesy for Lehi to speak of the Babylonian captivity. (1 Nephi 1:13 and 10:3)
6) Jesus appeared to the Nephites almost a year after the three days of darkness, not immediately.
7) Book of Mormon prophets probably drank wine and didn’t know about three degrees of glory and similar doctrines many today consider central to Mormonism.
8 ) Nephi’s “goodly” parents comment probably indicates socio-economic standing, not moral goodness.
9) The small plates were translated last.
10) Nephi wrote the small plates 30 years after the events they depict and had political purposes (as well as others) in mind.