Be a pro Mode Unnecessary Restrictions

Why" be a pro" mode ends in level 50? I want to improve my player as long as I play this mode. It is just an offline mode. Why do you restrict players? Improving is the attractive part of the mode. I think you do not need to restrict players. On the other hand, I should be able to make my speed 99 without changing my body options. Again, this is just an offline mode, restrictions are quite unnecessary.
Sincerely yours.