Why not allow tax payers to decide which government organizations receive their individual taxes? Can you offer an example of a public good that people would forget to fund? (hint, it's a trick question...by offering an example you automatically disprove your example) Is looking at how tax payers would allocate their individual taxes the most objective and accurate way of determining their values? If not, can you offer a better method? Is it possible to argue that a public good would be over/under funded without implying that that the values of tax payers as a whole are wrong/misguided/incorrect?
Yes. I should be given a list of all areas of government where my tax is spent. So I would not contribute to foreign aid, asylum seekers, MP's expenses and a few others.
That's why they want to be into politics. If the public wants results, put politicians on minimum wage.