Fair enough if you think he's a better option than ramirez and lallana, i think that both of them offer far more to the team and the team will play much better football as a result. He probably is better than schneiderlin was at the same age in terms of all round ability and effect on the game, not relevant to matchday selection and I would hesitate to use schneiderlin as an example of where JWP could be in a few years time.
Other than set pieces and crossing I am not sure what JWP brings to the team that ramirez, lallana, rodriguez, osvaldo, lambert, schneiderlin, wanyama, cork and and davis don't. All the previous names other than davis are superior players imo. He is much younger and much more inexperienced but as i already said this shouldn't factor into whether he plays or not.
This is the part I really don't understand. Why is that not a fair comparison?? This seems to be the base of your argument - that he isn't going to recognise the same rate of improvement as others, but I am really struggling to understand why you'd suggest that. I'd have thought that comparing him to a similar styled player at the same age was entirely fair.
