I agree with the original post. I also hear a vast majority of OT players saying that they don't care about the ceasefire. I find it quite sad. If the original post's consequence is too harsh, perhaps:
-First offense (Warning)
-Second offense (pay a fine. Say, 10% of your bankroll) *ouch*
-Third offense (Fired from OT Corporation - or - Exiled from the Clans by the Council)
Re-joining? Sure, after say, 50 levels? Over lvl 150? Ok, 100 hours of gameplay? *oooo, that's gonna leave a mark*
"You can't just talk to people anymore. You have to hit them in the head with a sledge hammer. Then you'll see that you have their strict attention." -Kevin Spacey in Seven