So about ranking systems, I've created about 5 or 6 of them since I started Arena Roleplaying on this site. The two that were most successful for me were the: 

10 Tier System with ranks being loosely placed.
And
15 Tier System with ranks being more tightly placed, but with the chance for characters to rank up.
Though both of them inevitably failed, due to lack of posting on the latter's part, and dying interest on the former's part.

To the point though; If someone could come up with a ranking system that everyone agreed on, that might increase the traffic to the Arena. Maybe open up the curtains that tend to cover up this rather small community of roleplayers.

Some people disagree with tier systems entirely, some people disagree with putting numbers to it, and some people disagree with how their character would be ranked. Lots of arguments come from it.