1) I wish that all humankind was of the same race. Don't care which existing race it is, just pick one variety of human and call it good.That sounds a little like Hilter's vision.
Hitlers vision was to exterminate races he viewed as inferior. I do not feel that any are inferior and the goal would be to blend everyone into one race thereby eliminating racism.
2) I wish that all humankind used the same language fluently.Why? Do you wish everyone ate ham sandwiches for lunch every day?
Dumb response for an all knowing genie! What ham sandwiches would have to do with uniting all mankind under one language I have no idea.
3) I wish that all humankind was united in the effort to eliminate illiteracy, class, disease, war, poverty and religion.How do you "cure" religion? I guess I don't understand the basis for your wishes.
You replace it with reason and clear understanding of the natural world and it's origins apart from mythology and ancient rival religions. Of course the basis for my wishes is unity, peace and common vision for the betterment of mankind. You're not really a genie, are you?