Exactly and think about how much money you can sell those sentries, teleporters or dispensers for! I imagine people would pay good money for a sentry that takes 200 metal to make and can shoot rockets and bullets. And a teleporter would be revolutionary, the first of it's kind. Dispenser could become the next medical miracle, able to save people from rockets, bombs, shotguns to the face, flying shovels etc. Honestly engies are so rich you'd think they could afford some hair but unfortunately, but maybe even with all the money in the world there are somethings you just can't get (Like decent hair transplants.)