I grind my self all the way to T6 slowly but surly moving up on the torment difficulties, and then there is the fresh level 70s who just go straight to T6 to get gear faster.
I'm posting this mostly because the gift was funny but at the same time I just want to say I still think solo clearing a difficulty should be required before being allowed to join a public game.
EDIT: Never mind after long consideration *solo clearing a difficulty should be required before being allowed to join a public game. is a BAD idea.