I don't think it's a good idea to develop a 777. another company is already planning it and they are awesome and it would not be a good business to create another 777.
I would howeve suggest an A330 because let's be honest, there is no perfect A330 on the market. I think CS would be very popular with an A330.
But for now I would cry for a speedtape EADI on the 767 so I can finally buy it!
Cheers!