I think a new rule should be added to Pease Treaties. I think that a Pease Treaty should be for a period of 10 years. If one side or the other breaks a Peace Treaty they lose 1,000 Influence Point to the other side for every year left in the 10-year deal. So, if you make peace with someone and break it the next turn they receive 10,000 IPs and you lose 10,000 Ips. If you break it 5 turns later, its 5,000 Ips and so on.
