So are 100% right my friend. The US is also one of the few true national team RTG combined with a league (MLS in this case) that is still left. Almost no other exist apart from a few smaller European countries. This is exactly what I also like.
And most definitely you are also right about the stadiums. I also noticed it, it also adds to the unsatisfied feeling of national team management, it becomes so standard so quick. You would think it is relatively easy to program a game to host in specific stadiums, the stadiums all have country codes I think. So the tournaments just need a randomizer in stadium choice connected to the countries. We can literally have a World Cup in USA / Argentina / Saudi Arabia / alot of the European countries, so there are alot of chances already here. But definitely this is also a very big wish of mine too, something small, but it makes it alot better!
If you know people, try to spread the message. I will post this link more often on Sofifa now, hopefully people from EA pick it up 🤞