Mexican Wedding Contracts

I heard today about a proposed new marriage contracts in Mexico. It seems that they want newly weds to sign a contract before the wedding . The contract will specify what happens if, at the end of 2 years , the couple decides they are not happy, what happens such as division of property , alimony, and child support. If the couple are in agrement the contract is signed and if at the end of two years they decide its time to part they simply do not renew the contract. It is designed to avoid clogging up the courts, avoid paying for lawyers and the like. I don't see a problem with this concept , after all we have to renew our drivers license, car tags , and business licenses. It will be intresting to see if this proposal is passed in Mexico and to see how it turns out in 2 years !