I'd stop giving it to non British citizens that haven't paid in. This is not inhumane and is the system in Spain at least, probably the rest of Europe too. There is also no access to the health system or any social housing. Once you pay in you are entitled to help but only for so long, so working for a year, entitles you to 1 year with 80% of your pay. This also stands for Spanish citizens. I'd keep jobseekers but aim to phase out the need for benefit top ups. It would leave more money and resources for disabled and elderly.
I'd increase the amounts for disabled and elderly.
I'd increase the amount for carers. If they didn't do what they do, LA's etc would have to pay for nurses etc so carers should receive AT LEAST the average wage if they can't work due to caring responsibilities. If they can work part time they should be topped up to AT LEAST the average wage. They should not be penalised for taking on a caring role.
For people with no issues affecting their ability to work, I'd expect them to find work. I'd get rid of this expectation of being kept by the state, the generations on benefits. I'd make employers pay decent wages so people aren't better of on benefits.
I'd allow full benefits to 1 parent even if their partner works, but only until the end of primary school. I think society is being damaged by kids in nursery all day so both parents can work. I think kids will benefit from a parent with the time to be home from pickup time to be with their kids. I'd make this changeable so the parents can easily swap.
I'd introduce state run nurseries that charge a sensible, reasonable amount.
While I'm at it, it renationalise gas, electric, water, Internet, royal mail and transport.
I'd do away with zero hour contracts and stop councils/LA's subbing everything and go back to people being employed properly in secure jobs.
I'd get rid of the layers and layers of beaurocracy within the NHS. I'd stop everything being tendered and subbed out and do as much as possible inhouse to stop the ridiculous overcharging to the NHS. I'd make sure nurses and auxiliary staff were paid a decent rate to do away with the majority being agency. That would then attract more staff hopefully.
To pay for it, I'd stop foreign aid, any benefits for people not born here who haven't paid in. No social housing for them. If they want to live in the UK then they need to show they can support themselves, the same as Europe expect. No more free ride.
I'd also increase manufacturing and becoming self sufficient as a country. Encourage British companies making British produce and products again, which will provide jobs.
But, none of that will ever happen.