You will end up with multiple redundant bureaucracies overlapping the same areas, spending tax money and blowing up budgets like it's going out of style, skyrocketing our already skyrocketed national debt, and you will lose any choice in the matter.
Good luck trimming those departments and fixing the bloat once it's implemented, because our federal government cannot do that even now.
This article is pie in the sky, it doesn't reflect the realities of the bloat and cost already present in our government.
The most efficiently ran part of our government is the military, and the amount of black holes in the accounting, the cost, it makes your eyes simply boggle.