Just musing.
Say you live in an area that lets you name 6 schools.
But you live right next to an LA boundary and the neighbouring LA only lets you name 3 schools.
Does that mean you could name 5 schools from neighbouring LA plus your banker catchment one in your area, thus having 5 choices in neighbouring LA whereas people living there only get 3?
I know that it probably wouldn't help you much due to distance, but if other things came into play such as faith criteria or 'aptitude' tests, wouldn't that give you somewhat an unfair advantage over someone possibly living across the road or next door but in the other LA?