Its a very good app for free! Well done! I don't know how but maybe you can try make it more like Cdock, so that there are further customisation abilities!
I am releasing an update tomorrow with tons of new features, including a custom floating dock too. It'll be really cool, I highly recommend you check it out!
Dockfix is a comprehensive, easy to use app allowing you to make changes to your docks appearance. Very nice replacement for Cdock fan's who have stopped using the program due to the "SIP" disabling