There are just too many small details to make it independent of Sapphire Falls. Saying it is different from the Sapphire Falls level is one thing, but trying to say its original is entirely another. Care to explain how so many small details mirror each other, and for that matter, why the big layout is so similar?
As for the wad's gameplay, it just seems like a stretched version of a level I already don't like. (more preference that anything else) Therefore it inherits everything from the old level that I didn't enjoy, waterfalls, difficult to escape rivers, (longer now) emphasis on springs... Not only that but it just seems like the old level was augmented, encouraging all of the things I didn't like and the things that there were just enough of. If I want to play a map like this, I'd be fine with SFZ, which isn't bad despite my preferences.