The age change to 4/30 was not LL's lead. It was USA Baseball's decision. LL followed along with almost every other baseball programs. The goal is to ultimately get the date to 1/1 which is used in all sports as the international age break. 4/30 was step once since there was resistance to the big step of 1/1.
When the date changes to 1/1, LL and other youth programs are going to have to decide whether the smaller fields end at age eleven or expanding the field size, which may be tough for some programs with fields squeezed into smaller areas.