I think you don't understand, Rory Byrne was in charge of those "successful" Ferrari, Tombazis was in charge of the most recent cars. He is behind Newey because he retired and came out of retirement this year. Considering Newey was chief 7-8 years after the last fully designed Byrne car and Byrne is still sharp since he was used as someone they could consolidate with, this car has better chance than recent years.
It has been in development much longer than the RBR supposedly and the only other car to have as much if not more is the Mercedes. Obviously you don't know the history as well as you might think.