I'm not sure it would be such a great idea to have a personal tax wallet allowing everyone to decide how exactly their tax money will be spent. But I do think we should work towards making governments unmanned to a greater degree. Protocols should decide how money is spent rather than individuals.
Finland is considered to be low in corruption and that may be the case in international comparison. But the system is very vulnerable to corruption at the point of outsourcing government services to the private sector. There is also a lot of sheer incompetence leading to massive waste.
In my utopia, the government works like a DAO rather than a manned organization.
RE: Dimmer-switching governance