The only way PES will ever come close to FIFA in terms of sales is by making it completely editable for the user and simple to do. I think theres a golf game, maybe golf club 2019 , that allows users to create courses and share online. If we had that with kits and also audio then it will have a chance of making a bigger dent.Did you see this guys? If this is true I have to say PES will be the best football game for me! I mean it's still beats Fifa easily but with this New Season Update and don't forget the fact or more precisely the rumor that they will licence Real Madrid too I think this is the final nail in Fifa's coffin.
https://www.footyheadlines.com/2020/06/pes-2021-to-be-released-as-digital-season-update.html
I would also throw in sliders too at least as an option so we can edit the gameplay which is essentially what the pc editors are doing.