wtf would you change about that bar in the GB? Its a brace to prevent the towers from moving closer together, how complicated does it need to be? Use a 2x4 if you want, it doesnt have to be complicated.
Rawburts doing a good job of helping the community with a product that wasn't available. If you can do a better job then get off your sack and make one better, but dont sit there and tear it down just to make yourself sound like a badass.