The problem with all this devolved government is that if different regions/counties etc. have different tax systems, benefits, health
If they ran it as happens in other countries (Spain, Isle of Man to a large extent) the tax rates and benefit rates remain static acrosss the country - it is how the money raised locally is spent that would be decided locally and not by a central government. It also gives residents much greater control and influence over the area in which they live as it is much easier to vote out local councillors than it is Westminster MPs.
Is there such a thing as delicious ready meals?