The only thing that was needed was a charged hammer and shoes to instant win any game. Teamfights start breaking out. And what do you do as an overpowered Engineer you may ask? Drop your turret, drop your ultimate and run away from everyone like a pansy. Or sometimes I would like to ninja a turret behind their team and bait them into Ralph's line of sight.... Yeah....my turret had a nickname... so what? You jealous?
But yes. Engineer has to be the most overpowered hero in the history of overpowered heroes. Not only this but it was ridiculous to see how long they kept Engineer in his overpowered state. If you did not play HON back in beta day, watch this video so you may fully understand the days where an Engineer pick was an insta-win pick.