Mount Binding to move App data to External Memory

I recently came across the idea of mount binding in Linux. I am wondering if I can mount bind the /storage/emulated/0/Android to /storage/sdcard1/Android. Will this extend my internal storage? Should I partition my sdcard into 2 partitions with one being ext2 file system for this to work? Will apps whose data is stored in the internal memory work if I do this and then move the data to the external sdcard? Where will the apps I download in the future store their data?