A safety net to give people a buffer while re-skilling or changing careers or starting a business sounds like a nice idea. The RSA announced a proposal for a £10,000 p.a. UBI: http://www.bbc.co.uk/news/business-43078920
Similar schemes have been piloted in Canada and Finland too.
But is it really sustainable or effective? Hard to see where this free money is practically going to come from, and two lump payments a year may make financial management more challenging.