hey, this looks nice so far!
your hack's name reminds me of another hack....world mario super, my very first super mario world hack.
i can see a bit of "copypasta" on the last screenshot with the ledge tiles, but i can understand what you're trying to do.
on the last overworld screenshot, i do not see layer 2 events, although you may be taking screenshots of the visuals so far.
on the first overworld screenshot, there may be cutoff on the stars on the blue background with the entire black sky.
good luck with this!
--------------------Currently: Starting college!