From what I understand, Eve Best has been ruled as leading actress for THE HOMECOMING, not featured. I suspect she will definitely get a nomination. I wouldn't rule out Laura Linney or Elizabeth Marvel from the Best Leading Actress in a Play category.
I highly doubt James Earl Jones will win for CAT ON A HOT TIN ROOF, and he may even be placed in the leading category (he is above the title).
And I wouldn't count out Rosie Perez from the Best Featured Actress in a Play category.
I like your predictions but frankly I just think it's too soon to tell. Especially in the play front with so many high-profile productions about to open: BOEING-BOEING, MACBETH, TOP GIRLS, THE COUNTRY GIRL, and LES LIAISONS DANGEREUSES.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"