Before adding 6 and under at states, I would like to see that the majority of wrestlers get the opportunity to wrestle on a full mat. Also, the better wrestlers should have longer time periods.
For example, some state championships for kids in the past have had full mats along with 2-2-2- periods for any wrestler over 100 pounds.
The problem with allowing 6 and under is limited resources of mat space etc... and compromising older wrestlers with small mats, short time periods (i.e. 1-1-1) etc. It is generally parents that 'push' their 6 year old without realizing the effect on their kid.