Brigham Young made an interesting statement regarding Book of Mormon Geography.
From these two statements it’s clear that Joseph Smith thought the Book of Mormon happened over all of the Americas.
it’s pretty clear that the Promised Land extends from North America to South America. The United States is the Promised Land. Mexico is the Promised Land. Brazil is the Promised Land. Etc.
These two quotes demonstrate how apostles are open to a smaller geographical size for Book of Mormon lands, rather than a larger size.
These cylinders do show that it's possible for a writing similar to the "reformed Egyptian" on the characters document to have existed in ancient Mesoamerica.
According to the first two prophet leaders of the LDS Church, Mormon’s never thought the Bible translations were complete or perfect in the first place.
Will we be able to progress after final judgement? These quotes by Mormon leaders leave the possibility open.