Am always wary of players doing well for their national teams. And I think we're fine with the English core. As @OneMoSalah pointed out above - if all goes well - we'll have James, CHO, Loftus-Cheek, Abraham, Mount and Barkley. That can pretty much form the spine of the team going forward.
No South Americans please, if possible. They can be difficult to handle, which isn't ideal for a team.