NT players should be removed from their club teams when they get chosen to play for the NT. They should all have a GS of 7 for the entirety of their NT careers. Once they are cut from the NT they retire. That would solve all of the problems with NT players. It would create a problem of compensation for players chosen. My solution is to reimburse the manager in the same way free agents are priced- 10x salary - with no maximum of 1000000. Suspected collusion between NT manager and training managers would be punishable by banishment from the game.
Once I scored a basket that still makes me laugh.