Pinkie Pie thinks it is indeed a very beautiful looking game, and simple thus far in its design. Outside of that, there isn't much for Pinkie Pie to comment on, since it was a demonstration of concept and an example of the gameplay.
Looks good, make sure to keep us updated as to your progress on it. I'd like to at least try it once you finish. I had an idea for a similar game seven odd years ago, but only ever got around to doing some art for it.