I find that natasha is better used as a defensive gun, slowing down enemies trying to get to the point or with the intel or just to slow them down so a sentry can hit them, but as for advanceing and attacking or arena maps, I feel the mini gun is more efficiant, as for the sandvich, as it was said most heavies travel with a medic, but the sandvich can save you from burning todeath if you are alone, but 75% of the time when I eat one some shows up to kill me