Is Europe doing that well that we should consider following their lead?
I don't think it is a good idea unless we want to go from bad to worse here.
The US Income Tax system, keyword is Income has been the device that put a de facto class system in the Democratic Republic we call home.
The IRS and the Internal Revenue Code are favorable for only the rich, even though there is a discrimination against the rich with the use of higher marginal tax rates. The rich can hide their income, defer it or severely reduce it.
The point is that income shouldn't be the criteria for the government to use on the people. A consumption base would be more equal and consistent with state sales taxes in most of the states.