Fwiw, both Akron and Marshall relied heavily on foreign players... The recruiting dynamics in soccer are quite interesting.
Unless you are a blue blood in soccer, Stanford, Virginia, Clemson, North Carolina etc. then you have to recruit creatively to play with them. Marshall isn't going to attract the 4-5 star HS kid or the MLS Academy kid, those kids are going to the blue blood or soccer elite schools. So going international is the best option if you really want to compete. The kids Coach Grassie brought in would rival a lot of the 4-5 star recruits and MLS Academy kids, if in the US that's who they would be.
Hopefully with a National Title in Coach Grassie's bask pocket some of the doors to 4-5 star recruits and MLS Academy kids open up but if not then he has proven he knows how to win without them.