I'll bite
Notnarb:
IMO let's make the ranking system kinda like wow too (slightly altered for simplicity). Up to Coperal is just a base number of games played vs the temp team. At corperal, that when you start to get points per win, increasing exponentially according to your opponent's rank. (Theoretical model here)
title - (points you get if you defeat one) (percent decay per month?) (maximum)
0. Grand Marshal (25 points) (25%) (1)
1: Marshal (18 points) (15%) (3)
2: Lieutenant (15 points) (10%) (7)
3: Admiral (12 points) (7%)
4: Sergeant Major (9 points) (5%)
5: First Sergeant (7 points) (4%)
6: Master Sergeant (5 points) (3%)
7: Sergeant (3 points) (3%)
8: Corporal (2 points) (0%)
9: Private (1 point) (0%)
10: Recruit (1 point) (0%)
With this model, you can't just get #1 and stay there for very long (similar to how Ken is in the San Diego rankings
). Of course it is going to be needing of tweaking along the way, but it shouldn't be hard to upload a formula like this to someone's site as a spreadsheet