Hello there @ThunderWInteractive
Short Answer:
Dont start new, Redesign the game concept and customize Marketplace Assets to work together.
Long Answer:
I develop with many Marketplace Assets as well. Developers like us will always find ourselves in this situation using many pre-created Assets of different designs. Thus, you will find yourself stuck in never ending game dev loop of restarting projects If you don’t design/redesign your game concept and customize the assets to work together.
My original game design has morphed into something completely different than what I started with, but, I refused to start over from scratch and repurpose my custom work. So I found my redesigning the game concept to fit the resources I possess, and customize the assets I could to fit into the new design.