What are your thoughts about putting taxation in the blockchain, blockchain with the characteristics we know - immutable, transparent, secure etc?

Edit: perhaps I wasn't very clear, I wasn't pertaining an added tax on top of blockchain transactions. But writing the tax data into the blockchain. Imagine, you'll be able to monitor your income tax through a block explorer and to where it is heading. Or be able to vote on which project your contribution will be spent? And so on.