Wall jump breaks this hack, as you can skip large level sequences unintentionally. On the other hand, this hack has quite a few bullshit areas, such as the forced hit after a midway point and the spike layout in the castle before the boss. All in all, frustrating experience.
This hack also overuses the P-switch to clear areas, particularly in the second level.
Luigi's handling makes him seem like he's played up to be a god - he can run on water, his jumps are extremely high even for being Luigi, and all those wall jumps. It's a very weird hack, and none of these attributes are utilized well.