Call me crazy but I am pretty over our players moving to giant clubs and then having their club careers go off the rails because they don't get game time or aren't ready for that level of step up. See for example Pulisic, Dest, McKennie, Aaronson, Pepi. Our best performers and the players that have developed the most in the last 3-4 years are guys like Antonee, who stuck it out with Fulham going down to the Championship, got loads of playing time and improved his game, and then was ready to be a PL-caliber LB when they were promoted. Or even guys like Flo Balogun (since he's now American) who took a middling loan to a Championship club and found out the level it takes to be a true first-team pro, and then went to a midtable French team to learn what it took to lead the line game in, game out.
The idea of a bunch of Americans playing at Chelsea, Juve, Barcelona, Bayern, etc. is awesome in principle. Less awesome when it potentially stunts the growth of our first true golden generation.