It’s not only because we revere ex United players. But standards have dropped so so much at United that putting in a first teamer from yesteryear’s would dramatically elevate the team. They were less than the best in a world beating side. Some of the current players are average in an average team.
So yes, Carrick, Fletcher, O Shea, Neville, Butt, Nani, Berg, would walk into this team and be a level higher let alone the true top level players like Scholes or Rooney
Agree with your point, not so sure about your list.