In brief, (what I think is realisitic, not what I'd call a utopia) something like this:
Vision - the aforementioned "defense at the coastline" plus co-operative global naval security operations proportionate to US trade volume.
Future - 3rd generation war is dead and gone, stop preparing to fight WWII with sci-fi tech, and prepare for quantitatively and fundamentally different conflicts. (There are lots of relevant buzzwords: bioweapons, information warfare, 5th Gen warfare. If I could authoritatively and succinctly describe what war in two decades would look like, I wouldn't be in IT.
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Goals - Safety of the citizens of the United States, their freedom, and their prosperity. The only 'nation-building' the US government should do is at home.
Means - Stop prepping to fight super-mega-scifi version of WWII. Maintain "Peace and friendship with all nations, and entangling alliances with none" and stop "going abroad in search of monsters to destroy". Cut the 'Defense' + 'Security' budget to roughly 1/3 of what it is now. Fold the Army into the National Guard, cut and refocus the Navy and the Air Force. (Yes, the mil-geeks and the flag officers are going to lose many, but not all, of their cool toys.) High-level service unification. Unify the intel community the same way. (And do away with my
bête noire of the NSA, and move their missions to other agencies that can actually accomplish them.) Maintain enough conventional forces for true national defense + commerce protection. (And seriously, just defense, not "defense" that is enough offensive striking power to end WWII in 3 days.) Maintain a resilient nuclear deterrent. Focus on emergency response, resilience and robustness. Recognize that terrorism is ultimately a law-enforcement problem. End corporate-welfare military contracting. Scrap the idiocy that is Homeland Security. Realize that the CDC is going to be more important than the CIA. Remember that, as H.G. Wells put it, "People always overestimate what will be possible in the next two years... and underestimate what will be possible in the next ten."