You mean you need a 30x30 map to be used during base defense missions that is capable of holding 4 craft?
an empty 30x30 hangar would be fine
at the moment i am stuck (no map modding knowledge
)
as you can see in the image base image (after the last nightly fix) one can create new facilities with size >2x2
in the second image you see the 4 10x10 hangar map parts are distributed left->right,top->bottom and hangar has 4 not 9 so a lot of dirt is there an a part of the hangar is not reachable (depending on placement)
so i hope my problem gets more understandable