I think it will be interesting (say) ten years from now to look back and assess Pep's influence and achievements. I certainly hope the list of achievements will be impressive; whether he will have a lasting influence on the game is anyone's guess; although I hope City will continue to use some version of positional play.
What I find fascinating is whether anyone can consistently do anything about it & whether Pep adapts further, as & when they try to.
It could of course be the case, that Pep loses his magic to motivate his players, in which case he'll just go, but if that isn't the case it would be really intriguing to see how others try to deal with Pep & hgow he tries to adapt to that.
We saw in his first season, various flaws emerge, such as Pep realising that he can't get away with Kolarov swanning around at cb, because we also have to defend, he's spent a fortune on big, fast, fullbacks & a big, quick, skillful cb when many thought he wouldn't buy one, he has Fernandinho as first name on the sheet, when many thought he would replace him with some Kroos style half arsed passer. He's got pace upfront, Aguero a mainstay, when many thought he would be out & maybe we'd play with no cf at all.
The Pep Bible, which many were quoting from his Barca days, has been rewritten in many aspects. We are not Barca, we are much tougher & of course have no Messi.
And he's still learning stuff, as he said at Newport.
I hope he decides to stick at it here.