I'm definitely for part of this suggestion.
As has been said the cap on foreign players is not viable for small countries... also I could just buy 10 American scrubs and then do whatever I wanted with the rest of my roster.
BUT I have had a similar interview with my player Paul Georg Isar. He is German and is one of the only stars of my team who is not an American citizen. He has received a lot of training from my club's staff and has lived in America for two years now. He is loved by our team and by our fans, however for some reason they don't buy as many of his jerseys and other merchandise because he is German and my fans think Georg should be spelled George.
This has become such a problem that there is a possibility of him being replaced as soon as an American with his build (a very unique build) can be found. If, in say, three more years of living in America under my same clubs jurisdiction he was able to acuire dual citizenship DEPENDANT ON STAYING WITH MY CLUB, I think he would feel a lot better as would our management staff. Also it would make my fans look less judgemental haha!
This would also encourage mine and other teams to keep players long term, something the Bbs always envisioned for BB.