i would just love they did something about those level freezers.

The problem is that what you say works only if other 75-90 people don't level freeze, but if a lot of people level freeze for the reason you say because they are told is the right way to behave then there would be no difference between a level 70 a level 80 or a level 90 field. Only 3 people per field get 16-18 advanced refinements, the other don't get them.