Personally, I really liked the simplistic graphics (games oftentimes don't get enough credit for not having complex graphics depending on the gameplay), however, I do wish that there were more levels and you were able to do more than just move in different directions. I'm not sure what this has to do with looping, but I'm going to assume that it has to do with the looping of the bullet hell and being stuck in it.
Either way, I enjoyed the game :D