What GP elements i sould add?

Im pretty much finished with the game mechanics.im now in the process of level designing.what should i add?any idea? bandicam 2018-08-12 18-26-03-069.jpg Here is some gameplay ezgif-2-cd28cc9e23.gif ezgif-2-56c2f7373a.gif Sorry.i just love how they look under each other😆