Ability to _add given an index

[Geoffrotism]

NGINX is pretty picky in the ordering of locations.
given:

location ~ /user/.* {
   proxy_pass something1;
}
location ~ /user/abc {
  proxy_pass something2;
}

All traffic will go through something1 if my understanding is correct.
Because of wanting to dynamically edit locations, it would be beneficial to be able to _add locations at a specified index just like the _remove function.