I guess we had similar ideas about two ships joined together! I thought it was really original and liked the enemy variety. I found it a bit hard to control since you were having to switch between dragging the two ships. Maybe you could allow the other ship to be pulled along the end of the rope when dragging the other one? Though maybe that would make it too easy.
I've not done much 2D stuff in Unity but I'm curious how the rope was implemented!