I do wish they would look at a simple universal income for all, taxing it back (plus, where appropriate) from those who do not need it.
I would support the idea of a UBI, but I am not in favour of it being taxed back from those who 'do not need it'. I loathe means testing, as it keeps people just above destitution 'in their place'. The better off can afford to save, to plan for the future, to have dreams to aim for, but those who know that every pound they earn above an arbitrary threshold will be taken back may as well just spend it as they get it.
I get tired of hearing that 'Mr X doesn't 'need' a free TV licence', or that 'My neighbour drives a Ferrari, so can't 'need' her state pension at 60', or whatever it is - basically moral judgements on other people's 'needs'. These do not take into account that people have different priorities (and to be fair, the best of us judge others on the basis of how we would spend our money).
The hypothetical neighbour may be eating potato peelings to afford her Ferrari. Mr X may be supporting 4 great grandchildren, or spending his money on providing wells to drought-stricken villages somewhere. Or he may have an expensive 30 year old girlfriend who makes his life worth living. If they have worked for his money and paid taxes, it is not for us to judge what others 'need' or why they might need it.
The poor are badly provided for, but their situation doesn't change with means testing until they get out of poverty, when they realise that they are trapped. The situation of the rich doesn't change with means testing either - they will always be ok, as nobody interferes with their spending.
It is the people just above the threshold who suffer every time, and it's not just about the ££, it is about the lost dreams, the lack of incentive, the sheer petty-minded meanness of deciding what other people 'need'.