Hey, sorry for the late answer.
You're right, it's not the most inspired level design you can find. I think there's a lot more to do with this concept, as there is always more to do with videogames ideas, but I was alone and I was aiming at complete this project in time. I'm not very quick and have a lot to learn so... I suppose the game is more basic than it should have to.
Thanks for your feedback. :)