Lynch,
I understand where you are coming from. I too wondered about the dimension sizes, not only for this board but also for all boards in general, but I do understand why size limits are necessary. It is to help the boards stay semi-uniform and load faster.
Nxsecure has one of the strictest sig policies on the net.. ask Conan. And if you disobey them they take your sig down and put up a stupid one, mocking you. While I don't agree with that method, it is effective, and funny.
Just edit the size and you are all set.
BB