Divorce reform #2

Have a marriage bank account where all the transactions of the husband and wife are kept so in the event of a divorce the asset split and child support payments will be more fair. If a man contributed to 70% of all the payments he should get 70% of the assets and the woman gets 30% of the assets, but assuming he is the higher income earner he should also be required to pay 70% of the child support whereas the woman only has to pay 30% of the child support.