I believe investigating the history of the Crypto and Converso Sephardic Jews has the capacity to impact how we view the history of the Church. For example, from the Utah History Encyclopedia, published by the University of Utah:
There is a popular myth that Orson Hyde was of Jewish ancestry, but careful investigation has uncovered no evidence this is true.
In contrast, an excerpt from the book by Ivan J. Barrett Joseph Smith and the Restoration:
In 1832 only a handful of Jews lived in Palestine, and those who did had no rights under Turkish rule. The roots of Zionism in the Jewish communities of Europe were barely stirring and the thought of Jews gathering at all was virtually unheard of let alone a return of the Jews to the Land of Palestine. But from that very time on, the spiritual stirrings of the Zionist movement began in earnest. God was about to give special ‘key’ to modern prophets as he had done with ancient ones; ‘keys’ to move the nations. In 1831, only a year after the Church was organized by Joseph Smith, another young man with a prophetic call by the name of Orson Hyde, age 26, of JEWISH ANCESTRY, was confirmed a member of the Church of Jesus Christ of Latter-day Saints by the Prophet Joseph Smith. When Joseph laid his hands on the head of Orson Hyde he gave him a unique blessing where in he prophesied the following: “In due time thou shalt go to Jerusalem, the land of thy fathers, and be a watchman unto the House of Israel; and by thy hands shall the Most High do a great work, which shall prepare the way and greatly facilitate the gathering of that People.”