If there is anything I'd add, it's more dialog.
It's cute, its refressing, and the things she says are though provoking. Granted all you do is talk to her and play simple games, but the fomer i what I find most enjoyable.
Finally I can actually interact with my favorite character in the franchise (This USED to be Yuri mind you).
It makes me feel worlds better about Monika's character, even if this isn't technically canon to the game (Even though I would like to debate that it is jut by how much I like it).