How would you feel about a fight in 7.3 where Sargeras's soul enters hosts throughout the fight. He has no body in this scenario, so its perhaps a council fight with him switching bodies throughout the fight empowering one of them. Since its just his soul, its only a small fraction of his power, but he is there and fully aware. Even talking to us. Would let us beat him as the end boss, without having to fight a planet sized Titan.