The hack is all right, but it could use a bit of improvement. I like the overworld and the level design in some of the screenshots, but a few things could be improved:
-The title screen seems a bit bland with only the rope and the koopa. Something as simple as adding some decorations in the level shown could make it look better. ;)
-That screen of flat bridge seems a bit bland. Add some land and/or decorations!
-The palette of the fence in the second-to-last screenshot looks ugly. Change the graphics/colors a bit so that it uses more than three colors.
-That last screenshot could use a background, and a bit more than clouds in the level itself.
This hack has a lot of potential, though... Keep at it, and I'm sure it will turn out well.
Your layout has been removed.