Making airplanes is a business not an artshow. Thus what matters is how much money can the aircraft make, plus of course safety. It seems that the 777 is doing well in both.ETOPS wouldn't be approved if it was not safe. I don't think the other problems you mentioned are serious.
Boeing developed the 777 to replace the older planes like the Dc-10. You're in the unfortunate minority who's unhappy about that. Most people prefer to fly new airplanes. Most airlines prefer new planes including the 777. So I don't think Boeing will listen to you. Sorry!
By the way, I wouldn't like the 777 replacing the 747. The 747 is my favorite. But if replacing it serves better my interest as a customer, am I willing to pay the price? I don't think so. I'll go see the 747 in a museum and fly the 777!