I never got back to you with any suggestion, but that was since you did so nicely on your own.
Here's a suggestion, though I think you're discussing it already: RAISE THE BAR!!!
I shouldn't be a crown prince after 100 something posts. That should be at 1000 or something.
Not that I'm complaining... 
Hehe, degraded you to 'Constable'

Here's the new order:
Broomstick 0, Slave 10, Peon 25, Peasant 50, Commoner 75, Constable 100, Herald 150, Squire 200, Knight 250, Liegelord 300, Duke 350, Baron 400, Chancellor 450, Royal Knight 500, Crown Prince 600, King 800, Imperator 1000
(number of required posts, that is)
The number of members is still rather small though, so if you guys know any fans who are still not activated into this realm, please be so kind and give them a push.