What you are saying makes no sense. How would removing the salary cap exemption for 2 seasons stop the above? I don't think you understand what the salary floor exemption is. It is not a penalty. You are talking about teams not building up a sustainable infrastructure which defeats your argument. The salary floor exemption is there for new teams to allow them to do that by keeping salaries very low and tank to build a strong base. If a team chooses not to do that then you can't help them and they are in no worse of a position than if there was no exemption for new teams.
What you are describing where someone buys a high salary player would happen more if there was no exemption as you might as well get a decent player if you are paying the salary anyway.
Training a player who you think could make our u21 National Team? Message me to check in with progress towards the team.