Something that the remake never has. A level editor.
But more than a version 1.0, it is actually a 0.1. Why?
Because it still needs a lot of polishing, like the fact that the music in the menu is duplicated and reverberates a lot, or that when you go back to edit a previous level, almost everything is deleted when playing.
It even needs to polish animations and more game elements, but better than not to avoid a cease and desist.