First and foremost, we are really glad you enjoyed the game so much. It means a lot.
Secondly, yes, we are planning to improve this project, and we are working on it. So far we've mostly done the invisible part of the game (optimizing, better feedback, fixing bugs, controller support etc). If we work on schedule, or more likely, faster than planned, we might be able to upload a new release of the game including a bossfight, by the end of the rating phase. But then again, this is pretty unlikely.
Thank you, again, for your kind comment! :)