[kronos77]

1. M-16. Would use something like Gallil or Serbian M-21
2. Switch back to recruit Army, leaving only elite units professional.
3. Implement AA missile systems like Russians have, abandoning Air defence leaning on the Airforce.
4. Scrapped toys like F-22 and build more A-10s
5. Stopped building carriers nad build more tanks, APCs, IFVs, self-propelled guns
6. Make conscript (recruit) army so that evry US citizen feels as part of national defence.

For starters...

[Citizen Blade]

Switch back to recruit Army, leaving only elite units professional.

The military has no interest in this, and rightfully so. The age of large conscript armies has passed.

[Thunder90]

I would still keep around some F-22 and F-35 platforms for gaining air superority. I don’t know how the recently debuted PAK-FA T-50 aircraft compares to those.