My circumstances haven't been mentioned above. I voted for "other ideas" in the poll.
Child benefit should be shared between the childrens' carers.
My situation is that my childrens' mother receives paid-for social housing, Disabilty benefit for herself, Income Support for herself and the two resident children, Child Benefit for the two resident children and CSA-compelled payments from myself for the two children.
The children have overnight contact with myself for two nights every week and for a share of school holidays and at times when their mother is ill and taken to hospital/unable to cope. This amounts to excess of 156 nights per year or average of three nights per week.
So for the one night more per week that the children stay with her, she has a net extra of over £100 (for the children) than I do (>£30 child benefit, +£35 CSA payment to her, -£35 CSA payment from me) which is a crazy amount for that one night.
Not considering that she receives 100% of the Income Support for the children too when they are not staying with her for 3 nights per week average.
I would propose that the expense of providing for the children on contact be recognised by the benefits system (and the saving realised by the resident parent in not feeding, bathing, laundry, entertaining, babysitting for the children during that contact).