Ok guys I made the ranks but let me know what you think!
Level 1 - helping Molly in the lab (10 posts)
Level 2 - on the drugs squad with Lestrade (100 posts)
Level 3 - examining a body with John (300 posts)
Level 4 - holding Mycroft's umbrella (500 posts)
Level 5 - disabling one of Moriarty's bombs (1000 posts)
Level 6 - deducing with Sherlock (2000 posts)
Let me know if I should change anything! Thanks
~Nikita~