Regardless of whether Bitcoin is used, the universal income is a great concept. We have endless subsidies, tax credits, welfare programs and the like. Abolish them all - have one universal payment that covers basic food and shelter and close the bureacracy.
Of course, that is also the main problem with the idea. There are a lot of state employees who would be immediately redundant.
I agree it's a great concept. I do think it needs fine tuning before it's viable though - for example, people with disabilities should still be taken care of, so a certain amount of bureacracy will always be necessary.
Of course, being in IT, I do tend to think that eventually software will eat most of bureacracy *eventually*... it will take time though.