KHALICANVAS STUDIOS'S PROFILE

Sure. No problem.

Story
Keep it the way it is.
Characters
Keep it the way it is.
Gameplay
Keep it the way it is.
Yes, I would have less motivation to play it.
Graphics
Keep it the way it is.

In my opinion you should keep everything the way it is, from the gameplay to the story. Playing an NPC is what makes me want to play your game, mocking rpg cliches is what makes me want to play your game. Any change, even implementing a battle system will make your game stray off the path of what it was once meant to be. It might still be a good game/great game but it would also be like any other game and loose its uniqueness. You could change the graphics if you want but I love it the way it is.

And I like the story of how it focuses on the girl, the hero side of the story is just a cliche and so make fun of it all you want but no need to elaborate it. You could work on the girl's story to great depths though, for example the neck less was given to her by her diseased grand mother whom she loved very much and who has also taught her to be kind to other human beings, the reason she helps out her fellow villagers so much.