Tip: Take advantage of easy to install Patches in your hack. The No More Sprite Tile Limits or SA-1 patches should be considered if you're encountering glitches where Mario and/or sprites are turning invisible.
I started playing it and it was very entertaining so far. The hack is simple but it makes you feel so smart when you solve a puzzle.
Just noticed your WIP thread for this hack was created almost 3 years ago... Time doesn't fly at all :p