Brass Plates go to all nations - Unfulfilled Prophesy

18  That these plates of brass should go forth unto all nations, kindreds, tongues, and people who were of his seed.

(Book of Mormon | 1 Nephi 5:18)

This has not happened yet.  The brass plates have not been seen since Mormon used them, I think.

The 3 Nephites

31  Therefore, great and marvelous works shall be wrought by them, before the great and coming day when all people must surely stand before the judgment–seat of Christ;
32  Yea even among the Gentiles shall there be a great and marvelous work wrought by them, before that judgment day.
33  And if ye had all the scriptures which give an account of all the marvelous works of Christ, ye would, according to the words of Christ, know that these things must surely come.

(Book of Mormon | 3 Nephi 28:31 - 33)

Christ's Return

I shall come in my glory with the powers of heaven.

(Book of Mormon | 3 Nephi 28:7)

Prophesies of the Last Days

3  And he did expound all things, even from the beginning until the time that he should come in his glory—yea, even all things which should come upon the face of the earth, even until the elements should melt with fervent heat, and the earth should be wrapt together as a scroll, and the heavens and the earth should pass away;

(Book of Mormon | 3 Nephi 26:3)

grow up as calves in the stall (Book of Mormon | 3 Nephi 25:2)

American King James Version
But to you that fear my name shall the Sun of righteousness arise with healing in his wings; and you shall go forth, and grow up as calves of the stall.

American Standard Version
But unto you that fear my name shall the sun of righteousness arise with healing in its wings; and ye shall go forth, and gambol as calves of the stall.

gam·bol/ˈgambəl/ 

Verb: Run or jump about playfully.

Unfulfilled Prophesies

2 Ne 27:3 Nations that fight  against Zion shall be as a dream

2 Ne 27:4 people shall be drunken, but not with strong drink

2 Ne 27:11 all things shall be revealed

2 Ne 27:22 sealed portion of Golden Plates revealed

2 Ne 29:13 the Nephites & Jews shall have the words of the lost tribes of Israel (new scriptures)

2 Ne 30:10 the Lord God shall cause a great division among the people

Jacob 5 For a long time they will lay up fruit. v. 76 (Millennium)

Evil fruit will again come in to the vineyard. (at the end of the millennium)

The good and bad will be gathered.  Good  - preserved (in heaven)

Evil - cast away into it's own place (outer darkness)

The End - vineyard burned with fire (earth burned)

Jacob 6:3 The world shall be burned with fire.

Mosiah 3:20 the time shall come when the knowledge of a Savior shall spread throughout every nation, kindred, tongue, and people.

Mosiah 12:23 the Lord hath comforted his people, he hath redeemed Jerusalem (Christ will physically save Jerusalem)

Mosiah 12:24, Mosiah 15:28 The Lord hath made bare his holy arm in the eyes of all the nations  (Every nation will know of Jesus)

Mosiah 12:24  all the ends of the earth shall see the salvation of our God. (Everyone will see Jesus come again.)