Hello there and thank you for the feedback.
Over the past 2 weeks I have been working on the game with some creative guidance from the feedback I have received.
Since your original post Hellspawner has undergone a lot of drastic changes which I hope you'll enjoy. In regards to the original Imp models they have not only received a splash of colour since the original post but they have even undergone a facelift in making the pregnancy belly they sport more pronounced and rotund to the players eye. There has also been another demon added in the form of the Succubus who also gets pretty gravid upon defeat.
I once again thank you for the feedback as it was the kick in the butt I needed to continue development on Hellspawner. :)