I am not sure if this has been already discussed. What do you think which ordinal will Leonor assume? No queen of Castile or Aragon has been named Leonor (Eleanor), but there has been a queen of Navarre named Leonor. Is it possible for her to be known as Leonor II? It would've been much easier if they named her Isabel (Isabel III) or Juana (Juana II)...
Also, what title is her husband going to have? Husbands of Spanish queens traditionally became iure uxoris monarchs (not just consorts). Will he be titled king or something lesser (such as Count of Barcelona)?