Mike,
While that may have been your thought, it would make no sense to attempt builds for each park, no more than it would to make one knife for anything (or any park) specifically. We (I) would never have the time (or the slots) to make a bunch and have already stated so after your initial idea.
What "does" make sense is to build a knife to be used at "some" of our national parks.
Just sayin', Capt. Chris
PS: All Bowies have a sharpened false (top) edge, making them illegal in some states...Maybe we need to decide what the hell we want the knife to do...and where...before we go any farther?