What's the point of ranks?

[Seif]

hes saying you can do 1 quest and go from 1-50

Sorry about that =D
To me all the leves and quests in the game look and feel and are designed like they're all the same with just different flavor text blocks and same strategy everywhere.

The missions look different but so far I haven't had to DO much in them so I don't think they offer much in the form of gameplay variety.