We all know that the wings are not necessarily Emperor-given, but is Sanguinious' gift of prophesy not confirmed? Or is that something separate, and his true gift is that of endless compassion?
everyone loved him, and in the story I know he was even willing to forgive Horus before he was killed, but given that I haven't begun reading the Horus Heresy series I don't know how much of that is still 'true' or if we're going back to the Ollanius Pious story instead.