What's wrong with what you're describing?The MLS Next and NWSL Next thing needs to die. Its stupid. Please tell me how many girls and boys actually go to the pros and bypass college? What a handful over the past 5 years. Its ridiculous. They need to be able to go to college and play the sport they love and get an education and have their sport pay for it, graduate and get a good job and live their life. Some can continue to play in the pros or national level. That's how it should work. But yeah that's going away. If that normal pathway does go away which his what's starting to happen everyone is going to question why these kids and parents are evening spending the money and resources and time to even play high level soccer. If anyone is playing ECNL and in high school and tells you their kids grades are not suffering because of their sport then they are straight up lying to you. All that time could be spent on school work so if the only pathway to college is school work and not sport then the sport goes away which means the ECNL goes away for Girls for example. Or they still have it but the level of play is going to seriously drop.
Also it's not like college sports are going to go away. Baseball has Pro and Minor league levels of play and College baseball still exists.
The same type of thing i was describing could happen to baseball. If players wash out of Pro or Minor league teams they'd still be able to play in college.