How about beside everyone's rating, you have an icon of a chess piece whose strength corresponds to the rating?

Here's how it would correspond:

pawn: <1200

knight: 1200 to 1499

bishop: 1500 to 1799

rook: 1800-2099

queen: 2100-2400

king: >2400

To further that idea, how about having groups play against other groups with their army consisting of all the pieces that appears beside every team member's username?

What do you think? 

That's pretty cool!

What rating would you use? We all have 5 of them. 

The online chess one, probably.

It would not be fair when someone with 1200 gets the same symbol with that of 1499.And why should a knight represent less ratings in comparison to bishop?

One has to come first.

Perhaps so. I just thought it'd be fun.