Intriguing, but I see at least two issues. The proposal for the Active Army sounds suspiciously like the Marine Corps. They are traditionally the ones that are expeditionary in nature and deploy more frequently. With their history for continually fighting off suggestions of folding them into the Army, they are not likely to go along with this.

If you think it's a problem getting the USAF to focus on airlift and other capabilities rather than strategic bombing and the like, try getting the Active duty Army to transfer all of its heavy stuff to the Guard! The Army likes their toys as much as we do. Besides, the Army's mission is to fight the big war and break nations.

Would there be issues transitioning from one mission to another? We've seen the downside of transitioning from preparing for the bug war to fighting in a COIN environment. If the bulk of our Army is geared toward COIN, does it hurt us when the next peer attacks? The author's purpose and argument is valid, but would it make more sense to expand the Marine Corps and have them geared solely to this and used the Army as heavy backup?