That and plenty of hacks do very little changes to the point it's not really worth submitting. (Such as zones being nothing but recolours and minor gameplay changes)
A hack that has major changes in art, gameplay, or anything else? Hacks like that have been pretty much the only ones that have been accepted.
A hack that has major changes in art, gameplay, or anything else? Hacks like that have been pretty much the only ones that have been accepted.