The thing is that NA players are too expensive for what they deliver and since they became a little recognized in the scene they start streaming and making a lot of money with content creation and start to not care that much and start to have disapoiting performances.
I think they've imported some LATAM players (That is if Mexico is considered Latin America), wippie from russia on Version1, xeta and Sayaplayer from South Korea on C9 and The Guard respectively