Yes, I get your point, but it is also a fact that an experienced team with caps has won the 5 world cups. As the link points out how many caps and years of test match experience did Sam Whitelock have when he won with NZ in 2011? Or Steve Thompson before 2003. Not many, but they were surrounded by players who did have a lot of caps and were world class. Right now Jones could drop Cole, Hartley, Robshaw, Brown. But Let's face it none of them are world class, but it does mean replacing them with players who are likely to be world class and surround them with experienced players. Those experienced players are the likes of Hartley, Cole, Robshaw and Brown.
It may be the case that 2019 will be too soon for even this squad of players looking at this far out.