I am also interested in knowing about this, before kitkat big games would store the additional downloaded game files on the microSD card saving space on the internal memory. I have seen posts saying that to bypass the kitkat SD card restrictions you have to edit platform.xml but other posts have said to edit the build.prop file. Which one is right?
Indeed it seems as if editing platform.xml could solve this. Please refer to this thread for a tool that automates the process of editing platform.xml.