With the stand down period being set at 3 years, it does open the very real possibility that a player, let's use Odogwu as an entirely hypothetical example, could play in the 2023 WC for Italy, have a fantastic tournament and make a real name for himself then turn his back on Italy and announce his intention to represent England at the following WC, after being tapped up by Eddie's successor, making him available for a full year in the lead up to the 2027 WC. Extending it by just one year, thereby meaning that the player would have to sit out a WC in between would put a stop to this. Not that it's started. Yet! But that doesn't mean it won't.
Agree with BiND's point though that this might put a stop to players being capped once in a low key game, just to deny another country.