Give USF a stock rocket artillery unit and a heavy armored Sherman like a Brummbar that drives up to axis blobs and shrugs off PAK shots and just bleeds axis MP like mad
You can't even begin to imagine the screeching that would ensue if even a short barreled Jumbo suddenly appeared in US' stock roster.
As for indirect many of the lackluster commanders like Rifle Company would really pick up in attractiveness if they got some form of off map artillery to dislodge camping axis. Willy Pete in Rifle is really useless but if instead there was some off map barrage then it would definitely help the commander. Regardless RIFLE company should still give RIFLEMEN something more than just flares.