Worse combustion chamber design ever? Saveable?

Yes, I agree with you. But I cannot see how this design would ever be a good idea. Even if they were directing the intake charge to get more 'swirl', it could have been acomplished just with the shape of the chamber like with so many other heads.
Because it was. It came when the manufacturers were forced to do something for emissions as per the EPA. Performance was the last thing they were thinking about. They needed efficient combustion. Hell, Ma Mopar started using computers (Lean Burn system) and roller cams in production. They had a lock-up converter transmission with more innovations to come.