With all the options for better actions out there now I don't think blueprinting cheap mass-produced actions is really worth it anymore. By the time you pull off the barrel, change the stock out, and replace the trigger you might as well have just bought a bare action in the first place.
I have a factory stock R700 that hangs with some of my Defiances, yet neither of those really hold a candle to a Bat or Stolle. I replaced all the internals and only used the action and bare bolt, but didn't cut any metal on it.
I have a Stratton built on a worked-over Defiance, and a Bat that Alex Wheeler did, and those both benefited from getting touched up. But neither started as one of a million made in the first place. I'd rather wax a Ferrari than a Datsun.
FWIW I do have several Americans and they're fine for what they are, but I'm not sinking a nickel into them either.