There's no way this team has played to its potential. It was the youngest England team ever at a world cup in 2019, and the second youngest side in the whole tournament. Hardly any of the players have yet hit 30 and the average age of the squad is only slightly higher than the average age of the French squad, the one that everyone's raving about the 'potential' of. This England team is really only two-and-a-half years old. After the last Lions tour, England steadily shed a lot of the old veterans and leaders, chaps like Robshaw, Hartley, Haskell, Brown, Cole, and replaced them with young players. As a result, England's results were patchy, and I would say they overachieved in the world cup rather than peaked. NZ were clear favourites in the semi, especially after they obliterated Ireland, but England surprised them, then found a veteran SA team a step too far. This year, England have got back into the winning habit they had when Eddie first came and a number of the young players he brought in to replace the veterans are clearly better players than the fellas they replaced. Curry and Underhill are a major step up from Robshaw and Haskell for example. And four of England's ten games next year are against minnows, so, coupled with the Lions tour stealing a lot of the established players away, I expect we'll see a number of new faces blooded, and some of those will come in and freshen up the team again and keep it moving forwards.
England don't have zero ability to play the ball creatively. That's just an old cliche. Last year this same group of players were scoring tries for fun. They got a bonus point in 4 out of 5 6N games, put 8 tries on Ireland, 4 on Oz in the quarter final etc. The players haven't overnight lost all that talent and skill, they're just playing a lot more kick-heavy, i.e. different to the way they played last year. And next year they'll play different again. This idea that they're gonna just stick to the same thing for the next 3 years has no evidential basis. Eddie constantly talks about changing, developing, improving, staying one step ahead of every other team, being able to play any kind of game plan and to adapt and change in-game. There's no way he's just gonna stick to the same tactics for the next 3 years.