Let's make a thread!
Actually, the best thing to do is to abandon the neo-liberal solution from the start, and starting putting those taxes to actual good use (which the german government hasn't be doing). With the entire EU experiancing a "brain drain" of sorts, one of the new focuses should be on creating an education system that encourages German specialists to stay in Germany and push the country into a more service, high-tech economic direction and let the Eastern countries focus on the low-end niches of the overall economy. One of the best ways to do this is to have post-secondary education free for the student as long as he countines his work in the country after abtaining his education, thus stimulating the educated work-force economy while preventing (for the most part) the brain drain.
Also, if start taxing people equally using the method you propose, it won't help anything and just further entrench the "top-heavy" economies that plague both Europe and America alike (rich people buy over-priced things in relation to production, the extra profits go mostly to a rich man who in turns buys over-priced things, continuing the circle, meaning that little of the money rich people spend goes into stimulating the general economy). There does need to be a relocation of resources to the poorer classes to stimulate the economy (as poor people spend more of their money on things than rich people do, and they pay for things closer to the production price), but, as many people like you have pointed out, the current welfare system isn't working, it's too easy to manipulate and is full of loopholes. So instead of simplfying the tax system, let's simplfy the welfare system using a
guaranteed minimium income where everyone literally receives welfare checks, which will eliminate the minimum wage, unemployment insurance, pensions, disabled beniefts, the welfare trap, and government beaucracy ineffectiveness.
Who has the hangover seats?