From what we've seen recently with the NEW-DF war, it is highly likely that wars from now will be on a far smaller scale than what has been seen in the past. The phenomenon of global wars will slowly become history. Conflicts will slowly die out until CN reaches a critical point where there are so few people around, that people will finally truly no longer care about their stats. Then it will become a state similar to what we see on Tournament Edition.
In other words, all this e-lawyering bullcrap is slowly killing CN. It began with treaties to have an excuse to fight with an alliance you like. It is ending with people wiggling out of treaty obligations to keep other alliances close.
The requirement for a CB is another one of these e-lawyering !@#$%^&*. If you don't like an alliance, go war them. That's what the war screen is there for. This scenario, however, won't exist until the abolishment of treaties.
Unfortunately for all of us, this culture is so ingrained, that it is nearly impossible to change. Change is coming, however, as we can see when the Gramlins went paperless, and with FAN not resigning any treaties (as far as I know). Hopefully, it will continue to become a popular move to make.
With all this e-lawyering though, for now, wars are likely to be smaller, and occur far less frequently.