Have you considered reducing the overall scope of the federal government rather than just the executive branch?
I see the government doing at least two things: setting rules and providing services. Do you want fewer rules or fewer services? Or something else?
I only make the point that there is a broad spectrum of functional scopes for the government, and rather than looking at shifting the scope around, another possibility would be to revert the scope to sustainable levels
I want the fewest rules that create the most fair economy. And I know very few service better in the hands of government. And that includes bridges: