Try out the Legion ECS

[Velfi]

https://github.com/TomGillen/legion

Using an ECS could potentially speed up the project and make the code more manageable. Try Legion or another ECS and think of ways that it could be applied to this project.

This is a good one if you're interested in game development because ECS are getting used more and more. (see Unity's ECS DOTS https://unity.com/dots)